| Word | Base word | Definition |
|---|
| Alcyone | Alcyone | (Greek mythology) a woman who was turned into a kingfisher
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| arcsine | arcsine | the inverse function of the sine; the angle that has a sine equal to a given number
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| arsine | arsine | a poisonous colorless flammable gas used in organic synthesis and to dope transistors and as a poison gas in warfare
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| arson | arson | malicious burning to destroy property; "the British term for arson is fire-raising"
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| asin | asin | the seventh month of the Hindu calendar
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| assign | assign | select something or someone for a specific purpose; "The teacher assigned him to lead his classmates in the exercise"
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| Aswan | Aswan | an ancient city on the Nile in Egypt; two dams across the Nile have been built nearby
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| auxin | auxin | a plant hormone that promotes root formation and bud growth
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| axon | axon | long nerve fiber that conducts away from the cell body of the neuron
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| axone | axone | long nerve fiber that conducts away from the cell body of the neuron
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| basin | basin | a bowl-shaped vessel; usually used for holding food or liquids; "she mixed the dough in a large basin"
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| bassine | bassine | coarse leaf fiber from palmyra palms used in making brushes and brooms
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| bassoon | bassoon | a double-reed instrument; the tenor of the oboe family
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| Belsen | Belsen | a Nazi concentration camp for Jews created in northwestern Germany during World War II
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| benzene | benzene | a colorless liquid hydrocarbon; highly inflammable; carcinogenic; the simplest of the aromatic compounds
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| benzine | benzine | a colorless liquid hydrocarbon; highly inflammable; carcinogenic; the simplest of the aromatic compounds
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| benzoin | benzoin | used in some classifications for the American spicebush and certain other plants often included in the genus Lindera
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| Bergson | Bergson | French philosopher who proposed elan vital as the cause of evolution and development (1859-1941)
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| bison | bison | any of several large humped bovids having shaggy manes and large heads and short horns
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| blazon | blazon | the official symbols of a family, state, etc.
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| b-meson | b-meson | exceedingly short-lived meson
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| boatswain | boatswain | a petty officer on a merchant ship who controls the work of other seamen
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| boson | boson | any particle that obeys Bose-Einstein statistics but not the Pauli exclusion principle; all nuclei with an even mass number are bosons
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| bosun | bosun | a petty officer on a merchant ship who controls the work of other seamen
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| brazen | brazen | face with defiance or impudence; "brazen it out"
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| brucine | brucine | a bitter alkaloid poison resembling strychnine and extracted from nux vomica
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| bryozoan | bryozoan | sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding
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| Bunsen | Bunsen | a gas burner used in laboratories; has an air valve to regulate the mixture of gas and air
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| caisson | caisson | large watertight chamber used for construction under water
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| calcine | calcine | heat a substance so that it oxidizes or reduces
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| Carson | Carson | United States frontiersman who guided Fremont's expeditions in the 1840s and served as a Union general in the American Civil War (1809-1868)
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| casein | casein | a water-base paint made with a protein precipitated from milk
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| chasten | chasten | correct by punishment or discipline
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| chosen | choose | an exclusive group of people; "one of the elect who have power inside the government"
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| Chosen | Chosen | an exclusive group of people; "one of the elect who have power inside the government"
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| Christen | Christen | administer baptism to; "The parents had the child baptized"
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| claxon | claxon | a kind of loud horn formerly used on motor vehicles
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| cloisonne | cloisonne | enamelware in which colored areas are separated by thin metal strips
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| coarsen | coarsen | make less subtle or refined; "coarsen one's ideals"
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| consign | consign | give over to another for care or safekeeping; "consign your baggage"
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| cosign | cosign | sign and endorse (another person's signature), as for a loan
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| cosine | cosine | ratio of the adjacent side to the hypotenuse of a right-angled triangle
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| cousin | cousin | the child of your aunt or uncle
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| coxswain | coxswain | the helmsman of a ship's boat or a racing crew
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| cozen | cozen | cheat or trick; "He cozened the money out of the old man"
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| cresson | cresson | of a moderate yellow-green color that is greener and deeper than moss green and yellower and darker than pea green
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| crimson | crimson | a deep and vivid red color
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| cuisine | cuisine | the practice or manner of preparing food or the food so prepared
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| cyan | cyan | a primary subtractive color for light; has a blue-green color
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| damson | damson | dark purple plum of the damson tree
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| dapsone | dapsone | antibacterial drug used to treat leprosy and some kinds of skin diseases
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| Dawson | Dawson | a town in northwestern Canada in the Yukon on the Yukon River; a boom town around 1900 when gold was discovered in the Klondike
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| design | design | the act of working out the form of something (as by making a sketch or outline or plan); "he contributed to the design of a new instrument"
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| disown | disown | cast off; "She renounced her husband"; "The parents repudiated their son"
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| dizen | dizen | dress up garishly and tastelessly
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| dobson | dobson | large soft-bodied insect having long slender mandibles in the male; aquatic larvae often used as bait
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| Dodgson | Dodgson | English author; Charles Dodgson was an Oxford don of mathematics who is remembered for the children's stories he wrote under the pen name Lewis Carroll (1832-1898)
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| dozen | dozen | the cardinal number that is the sum of eleven and one
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| ensign | ensign | colors flown by a ship to show its nationality
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| Essen | Essen | a city in western Germany; industrial center of the Ruhr
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| Essene | Essene | a member of an ascetic Jewish sect around the time of Jesus
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| exon | exon | sequence of a gene's DNA that transcribes into protein structures; "exons are interspersed with introns"
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| fasten | fasten | make tight or tighter; "Tighten the wire"
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| flaxen | flaxen | of hair color; pale yellowish to yellowish brown; "flaxen locks"
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| flexion | flexion | act of bending a joint; especially a joint between the bones of a limb so that the angle between them is decreased
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| fluxion | fluxion | a flow or discharge
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| foreseen | foresee | realize beforehand
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| frisson | frisson | an almost pleasurable sensation of fright; "a frisson of surprise shot through him"
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| frozen | freeze | incapable of being changed or moved or undone; e.g. "frozen prices"; "living on fixed incomes"
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| fusain | fusain | a stick of black carbon material used for drawing
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| Gibson | Gibson | United States tennis player who was the first Black woman player to win all the major world singles titles (1927-2003)
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| glisten | glisten | the quality of shining with a bright reflected light
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| glycine | glycine | genus of Asiatic erect or sprawling herbs: soya bean
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| godson | godson | a male godchild
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| grandson | grandson | a male grandchild
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| Grecian | Grecian | a native or resident of Greece
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| greisen | greisen | a granitic rock composed of quartz and mica
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| grison | grison | carnivore of Central America and South America resembling a weasel with a greyish-white back and dark underparts
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| halcyon | halcyon | a mythical bird said to breed at the time of the winter solstice in a nest floating on the sea and to have the power of calming the winds and waves
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| Hamsun | Hamsun | Norwegian writer of novels (1859-1952)
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| handsewn | handsewn | sewn by hand rather than machine
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| hands-on | hands-on | involving active participation; "he's a hands-on manager"; "hands-on operations"
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| hasten | hasten | act or move at high speed; "We have to rush!"; "hurry--it's late!"
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| hausen | hausen | valuable source of caviar and isinglass; found in Black and Caspian seas
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| hazan | hazan | the official of a synagogue who conducts the liturgical part of the service and sings or chants the prayers intended to be performed as solos
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| helxine | helxine | one species; a dwarf creeping mat-forming evergreen herb
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| Henson | Henson | United States puppeteer who created a troupe of puppet characters (1936-1990)
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| hexane | hexane | a colorless flammable liquid alkane derived from petroleum and used as a solvent
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| hircine | hircine | of or pertaining to or suggestive of a goat (especially in strong odor)
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| hoactzin | hoactzin | crested ill-smelling South American bird whose young have claws on the first and second digits of the wings
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| hoatzin | hoatzin | crested ill-smelling South American bird whose young have claws on the first and second digits of the wings
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| Hudson | Hudson | a New York river; flows southward into New York Bay; explored by Henry Hudson early in the 17th century
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| Husain | Husain | king of Jordan credited with creating stability at home and seeking peace with Israel (1935-1999)
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| Hussein | Hussein | king of Jordan credited with creating stability at home and seeking peace with Israel (1935-1999)
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| hyoscine | hyoscine | an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures; "transdermal scopolamine is used to treat motion sickness"; "someone sedated with scopolamine has difficulty lying"
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| hyson | hyson | a Chinese green tea with twisted leaves
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| Ibsen | Ibsen | realistic Norwegian author who wrote plays on social and political themes (1828-1906)
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| insane | insane | afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"
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| Jackson | Jackson | a town in south central Michigan
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| Jansen | Jansen | a Dutch Roman Catholic theologian (1585-1638)
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| Jason | Jason | (Greek mythology) the husband of Medea and leader of the Argonauts who sailed in quest of the Golden Fleece
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| Jensen | Jensen | modernistic Danish writer (1873-1950)
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| jigsawn | jigsaw | fine-toothed power saw with a narrow blade; used to cut curved outlines
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| Johnson | Johnson | 17th President of the United States; was elected vice president and succeeded Lincoln when Lincoln was assassinated; was impeached but acquitted by one vote (1808-1875)
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| Jolson | Jolson | United States singer (born in Russia) who appeared in the first full-length talking film (1886-1950)
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| Jonson | Jonson | English dramatist and poet who was the first real poet laureate of England (1572-1637)
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| Kansan | Kansan | a native or resident of Kansas
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| Kazan | Kazan | an industrial city in the European part of Russia
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| keelson | keelson | a longitudinal beam connected to the keel of ship to strengthen it
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| khamsin | khamsin | an oppressively hot southerly wind from the Sahara that blows across Egypt in the spring
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| Khoisan | Khoisan | a family of languages spoken in southern Africa
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| Klaxon | Klaxon | a kind of loud horn formerly used on motor vehicles
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| Kusan | Kusan | a Penutian language spoken by the Kusan
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| langsyne | langsyne | past times remembered with nostalgia
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| lasagne | lasagne | very wide flat strips of pasta
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| Lausanne | Lausanne | a city in western Switzerland; cultural and commercial center
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| lessen | lessen | decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper"
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| lesson | lesson | a task assigned for individual study; "he did the lesson for today"
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| leucine | leucine | a white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins
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| listen | listen | hear with intention; "Listen to the sound of this cello"
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| loosen | loosen | become loose or looser or less tight; "The noose loosened"; "the rope relaxed"
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| Lutzen | Lutzen | a battle in the Thirty Years' War (1632); Swedes under Gustavus Adolphus defeated the Holy Roman Empire under Wallenstein; Gustavus Adolphus was killed
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| Luzon | Luzon | the main island of the Philippines
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| Lycian | Lycian | an Anatolian language
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| lyings-in | lying-in | concluding state of pregnancy; from the onset of contractions to the birth of a child; "she was in labor for six hours"
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| lysin | lysin | any substance (such as an antibody) or agent that can cause lysis
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| lysine | lysine | an essential amino acid found in proteins; occurs especially in gelatin and casein
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| Manson | Manson | Scottish physician who discovered that elephantiasis is spread by mosquitos and suggested that mosquitos also spread malaria (1844-1922)
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| mason | mason | a member of a widespread secret fraternal order pledged to mutual assistance and brotherly love
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| Massine | Massine | French choreographer and ballet dancer (born in Russia) (1895-1979)
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| meson | meson | an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0
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| mizen | mizen | fore-and-aft sail set on the mizzenmast
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| mizzen | mizzen | fore-and-aft sail set on the mizzenmast
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| moisten | moisten | make moist; "The dew moistened the meadows"
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| Mommsen | Mommsen | German historian noted for his history of Rome (1817-1903)
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| monsoon | monsoon | a seasonal wind in southern Asia; blows from the southwest (bringing rain) in summer and from the northeast in winter
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| mosan | mosan | a family of Amerindian languages spoken in Washington and British Columbia
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| mucin | mucin | a nitrogenous substance found in mucous secretions; a lubricant that protects body surfaces
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| muezzin | muezzin | the Muslim official of a mosque who summons the faithful to prayer from a minaret five times a day
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| myosin | myosin | the commonest protein in muscle; a globulin that combines with actin to form actomyosin
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| Myrsine | Myrsine | evergreen trees and shrubs having aromatic foliage; Africa; Asia (New Zealand)
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| myxine | myxine | type genus of the Myxinidae (typical hagfishes)
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| Nansen | Nansen | Norwegian explorer of the Arctic and director of the League of Nations relief program for refugees of World War I (1861-1930)
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| nelson | nelson | any of several wrestling holds in which an arm is passed under the opponent's arm from behind and the hand exerts pressure on the back of the neck
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| Nicene | Nicene | of or relating to the ancient city of Nicaea in Asia Minor
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| Nielsen | Nielsen | Danish composer (1865-1931)
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| Nilsson | Nilsson | Swedish operatic soprano who played Wagnerian roles (born in 1918)
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| nin-sin | nin-sin | Chinese herb with palmately compound leaves and small greenish flowers and forked aromatic roots believed to have medicinal powers
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| Nisan | Nisan | the seventh month of the civil year; the first month of the ecclesiastic year (in March and April)
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| Nissan | Nissan | the seventh month of the civil year; the first month of the ecclesiastic year (in March and April)
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| Nixon | Nixon | vice president under Eisenhower and 37th President of the United States; resigned after the Watergate scandal in 1974 (1913-1994)
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| obscene | obscene | suggestive of or tending to moral looseness; "lewd whisperings of a dirty old man"; "an indecent gesture"; "obscene telephone calls"; "salacious limericks"
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| ocean | ocean | a large body of water constituting a principal part of the hydrosphere
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| odds-on | odds-on | having a better than even chance of success; "the odds-on favorite"
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| opsin | opsin | retinal protein formed by the action of light on rhodopsin
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| oscine | oscine | passerine bird having specialized vocal apparatus
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| oxen | ox | domesticated bovine animals as a group regardless of sex or age; "so many head of cattle"; "wait till the cows come home"; "seven thin and ill-favored kine"- Bible; "a team of oxen"
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| ozone | ozone | a colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation)
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| parson | parson | a person authorized to conduct religious worship; "clergymen are usually called ministers in Protestant churches"
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| pepsin | pepsin | an enzyme produced in the stomach that splits proteins into peptones
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| person | person | a human being; "there was too much for one person to do"
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| phocine | phocine | of or relating to seals
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| Pilsen | Pilsen | a town in Czech Republic where Pilsner beer originated
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| piscine | piscine | of or relating to fish
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| poison | poison | anything that harms or destroys; "the poison of fascism"
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| porcine | porcine | resembling swine; coarsely gluttonous or greedy; "piggish table manners"; "the piggy fat-cheeked little boy and his porcine pot-bellied father"; "swinish slavering over food"
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| poussin | poussin | French painter in the classical style (1594-1665)
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| prison | prison | a correctional institution where persons are confined while on trial or for punishment
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| Procyon | Procyon | the type genus of the family Procyonidae: raccoons
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| Pusan | Pusan | a city in southeastern South Korea on the Korean Strait; the chief port and second largest city
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| Racine | Racine | a city in southeastern Wisconsin on Lake Michigan to the south of Milwaukee
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| raisin | raisin | dried grape
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| reason | reason | the capacity for rational thought or inference or discrimination; "we are told that man is endowed with reason and capable of distinguishing good from evil"
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| reassign | reassign | transfer somebody to a different position or location of work
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| resewn | resew | sew again; "The cuff of the coat had been resewn"
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| resign | resign | accept as inevitable; "He resigned himself to his fate"
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| resin | resin | any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
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| ricin | ricin | a toxic protein extracted from castor beans; used as a chemical reagent; can be used as a bioweapon; "one milligram of ricin can kill an adult"
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| risen | rise | (of e.g. celestial bodies) above the horizon; "the risen sun"
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| rosin | rosin | any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
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| Sachsen | Sachsen | an area in Germany around the upper Elbe river; the original home of the Saxons
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| Samson | Samson | a large and strong and heavyset man; "he was a bull of a man"; "a thick-skinned bruiser ready to give as good as he got"
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| sawan | sawan | the fifth month of the Hindu calendar
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| Saxon | Saxon | a member of a Germanic people who conquered England and merged with the Angles and Jutes to become Anglo-Saxons; dominant in England until the Norman Conquest
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| Schlesien | Schlesien | a region of central Europe rich in deposits of coal and iron ore; annexed by Prussia in 1742 but now largely in Poland
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| scion | scion | a descendent or heir; "a scion of royal stock"
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| season | season | one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions; "the regular sequence of the seasons"
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| self-sown | self-sown | growing from seed dispersed by natural agency such as wind or birds
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| selsyn | selsyn | a system consisting of a generator and a motor so connected that the motor will assume the same relative position as the generator; the generator and the motor are synchronized
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| sightseen | sightsee | visit famous or interesting sights
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| Simpson | Simpson | Scottish obstetrician and surgeon who pioneered in the use of ether and discovered the anesthetic effects of chloroform (1811-1870)
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| sison | sison | genus including stone parsley
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| Siwan | Siwan | the ninth month of the civil year; the third month of the ecclesiastical year in the Jewish calendar (in May and June)
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| stepson | stepson | the son your spouse by a former marriage
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| stetson | stetson | a hat made of felt with a creased crown
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| Swanson | Swanson | United States actress in many silent films (1899-1983)
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| tarzan | tarzan | a man raised by apes who was the hero of a series of novels by Edgar Rice Burroughs
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| taxon | taxon | animal or plant group having natural relations
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| Tessin | Tessin | an Italian-speaking region of southern Switzerland
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| Texan | Texan | a native or resident of Texas
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| Thompson | Thompson | English physicist (born in America) who studied heat and friction; experiments convinced him that heat is caused by moving particles (1753-1814)
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| Thomson | Thomson | English physicist who experimented with the conduction of electricity through gases and who discovered the electron and determined its charge and mass (1856-1940)
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| Thracian | Thracian | a Thraco-Phrygian language spoken by the ancient people of Thrace but extinct by the early Middle Ages
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| Tientsin | Tientsin | a major industrial center in northeastern China on the Grand Canal near the Yellow Sea; 3rd largest city in China
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| tisane | tisane | infusion of e.g. dried or fresh flowers or leaves
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| tocsin | tocsin | a bell used to sound an alarm
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| toxin | toxin | a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
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| treason | treason | an act of deliberate betrayal
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| trypsin | trypsin | an enzyme of pancreatic origin; catalyzes the hydrolysis of proteins to smaller polypeptide units
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| Tucson | Tucson | a city in southeastern Arizona ringed by mountain ranges; long known as a winter and health resort but the population shift from industrial states to the Sunbelt resulted in rapid growth late in the 20th century
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| tutsan | tutsan | deciduous bushy Eurasian shrub with golden yellow flowers and reddish-purple fruits from which a soothing salve is made in Spain
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| Tyson | Tyson | United States prizefighter who was world heavyweight champion (born in 1966)
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| unseen | unseen | a belief that there is a realm controlled by a divine spirit
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| unsown | unsown | (of a piece of ground) not have a crop sown on it; "farmland still unsown"
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| ursine | ursine | of or relating to or similar to bears
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| vaccine | vaccine | immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies
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| vepsian | vepsian | a Finnic language spoken by the Veps
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| Vinson | Vinson | United States jurist who served as chief justice of the Supreme Court (1890-1953)
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| vixen | vixen | a female fox
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| Watson | Watson | United States geneticist who (with Crick in 1953) helped discover the helical structure of DNA (born in 1928)
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| waxen | wax | having the paleness of wax; "the poor face with the same awful waxen pallor"- Bram Stoker; "the soldier turned his waxlike features toward him"; "a thin face with a waxy paleness"
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| waxen | waxen | having the paleness of wax; "the poor face with the same awful waxen pallor"- Bram Stoker; "the soldier turned his waxlike features toward him"; "a thin face with a waxy paleness"
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| whipsawn | whipsaw | a saw with handles at both ends; intended for use by two people
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| Whitsun | Whitsun | Christian holiday; the week beginning on Whitsunday (especially the first 3 days)
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| Wilson | Wilson | a peak in the San Juan mountains of Colorado (14,246 feet high)
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| wizen | wizen | lean and wrinkled by shrinkage as from age or illness; "the old woman's shriveled skin"; "he looked shriveled and ill"; "a shrunken old man"; "a lanky scarecrow of a man with withered face and lantern jaws"-W.F.Starkie; "he did well despite his withered arm"; "a wizened little man with frizzy grey hair"
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| worsen | worsen | grow worse; "Conditions in the slum worsened"
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| Yeatsian | Yeatsian | in the manner of William Butler Yeats
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| zayin | zayin | the 7th letter of the Hebrew alphabet
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| Zion | Zion | an imaginary place considered to be perfect or ideal
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