| agon | (noun) a festivity in ancient Greece at which competitors contended for prizes | - |
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| agonist | (noun) (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction | - |
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| (noun) a muscle that contracts while another relaxes | - |
| (noun) someone involved in a contest or battle (as in an agon) | - |
| (noun) the principal character in a work of fiction | Synonyms: protagonist |
| agony | (noun) intense feelings of suffering; acute mental or physical pain | Synonyms: torment, torture |
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| (noun) a state of acute pain | Synonyms: excruciation, suffering |
| amblygonite | (noun) a white or grey mineral consisting of lithium aluminum phosphate; a source of lithium | - |
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| antagonism | (noun) (biochemistry) interference in or inhibition of the physiological action of a chemical substance by another having a similar structure | - |
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| (noun) an actively expressed feeling of dislike and hostility | - |
| (noun) the relation between opposing principles or forces or factors | - |
| (noun) a state of deep-seated ill-will | Synonyms: enmity, hostility |
| antagonist | (noun) a drug that neutralizes or counteracts the effects of another drug | - |
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| (noun) a muscle that relaxes while another contracts | - |
| (noun) someone who offers opposition | Synonyms: adversary, opponent, opposer, resister |
| aragonite | (noun) a mineral form of crystalline calcium carbonate; dimorphic with calcite | - |
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| archegonium | (noun) a female sex organ occurring in mosses, ferns, and most gymnosperms | - |
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| argon | (noun) a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere | Synonyms: Ar, atomic number 18 |
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| argonaut | (noun) someone engaged in a dangerous but potentially rewarding adventure | - |
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| argonon | (noun) any of the chemically inert gaseous elements of the helium group in the periodic table | Synonyms: inert gas, noble gas |
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| bandwagon | (noun) a large ornate wagon for carrying a musical band | - |
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| (noun) a popular trend that attracts growing support | - |
| battlewagon | (noun) large and heavily armoured warship | Synonyms: battleship |
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| begonia | (noun) any of numerous plants of the genus Begonia grown for their attractive glossy asymmetrical leaves and colorful flowers in usually terminal cymes or racemes | - |
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| bygone | (noun) past events to be put aside | Synonyms: water under the bridge |
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| cosmogony | (noun) the branch of astrophysics that studies the origin and evolution and structure of the universe | Synonyms: cosmogeny, cosmology |
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| decagon | (noun) a polygon with 10 sides and 10 angles | - |
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| diagonal | (noun) a punctuation mark (/) used to separate related items of information | Synonyms: separatrix, slash, solidus, stroke, virgule |
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| (noun) an oblique line of squares of the same color on a checkerboard | - |
| (noun) (mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry | - |
| (noun) a line or cut across a fabric that is not at right angles to a side of the fabric | Synonyms: bias |
| (noun) (geometry) a straight line connecting any two vertices of a polygon that are not adjacent | - |
| diagonalisation | (noun) changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal) | Synonyms: diagonalization |
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| diagonalization | (noun) changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal) | Synonyms: diagonalisation |
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| dodecagon | (noun) a twelve-sided polygon | - |
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| dragon | (noun) any of several small tropical Asian lizards capable of gliding by spreading winglike membranes on each side of the body | Synonyms: flying dragon, flying lizard |
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| (noun) a fiercely vigilant and unpleasant woman | Synonyms: tartar |
| (noun) a creature of Teutonic mythology; usually represented as breathing fire and having a reptilian body and sometimes wings | Synonyms: European dragon, firedrake |
| dragonet | (noun) small often brightly colored scaleless marine bottom-dwellers; found in tropical and warm temperate waters of Europe and America | - |
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| dragonfly | (noun) slender-bodied non-stinging insect having iridescent wings that are outspread at rest; adults and nymphs feed on mosquitoes etc. | Synonyms: darning needle, devil's darning needle, mosquito hawk, sewing needle, skeeter hawk, snake doctor, snake feeder |
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| dragonhead | (noun) American herb having sharply serrate lanceolate leaves and spikes of blue to violet flowers | Synonyms: Dracocephalum parviflorum, dragon's head |
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| dugong | (noun) sirenian tusked mammal found from eastern Africa to Australia; the flat tail is bilobate | Synonyms: Dugong dugon |
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| epigon | (noun) an inferior imitator of some distinguished writer, artist, or musician | Synonyms: epigone |
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| epigone | (noun) an inferior imitator of some distinguished writer, artist, or musician | Synonyms: epigon |
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| ergonomics | (noun) the branch of engineering science in which biological science is used to study the relation between workers and their environments | Synonyms: bioengineering, biotechnology |
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| ergonovine | (noun) an alkaloid derived from ergot (trade name Ergotrate Maleate) that is less toxic than ergot; induces muscular contraction of the uterus and is administered after childbirth or abortion | Synonyms: Ergotrate Maleate |
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| eriogonum | (noun) any plant of the genus Eriogonum with small clustered flowers | - |
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| estragon | (noun) fresh leaves (or leaves preserved in vinegar) used as seasoning | Synonyms: tarragon |
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| (noun) aromatic perennial of southeastern Russia | Synonyms: Artemisia dracunculus, tarragon |
| flagon | (noun) a large metal or pottery vessel with a handle and spout; used to hold alcoholic beverages (usually wine) | - |
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| glucagon | (noun) a hormone secreted by the pancreas; stimulates increases in blood sugar levels in the blood (thus opposing the action of insulin) | - |
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| gonad | (noun) a gland in which gametes (sex cells) are produced | Synonyms: sex gland |
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| gonadotrophin | (noun) hormone secreted by the anterior pituitary gland and placenta; stimulates the gonads and controls reproductive activity | Synonyms: gonadotrophic hormone, gonadotropic hormone, gonadotropin |
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| gonadotropin | (noun) hormone secreted by the anterior pituitary gland and placenta; stimulates the gonads and controls reproductive activity | Synonyms: gonadotrophic hormone, gonadotrophin, gonadotropic hormone |
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| gondola | (noun) long narrow flat-bottomed boat propelled by sculling; traditionally used on canals of Venice | - |
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| (noun) a low flat-bottomed freight car with fixed sides but no roof | Synonyms: gondola car |
| (noun) the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant | Synonyms: car |
| gondolier | (noun) a (Venetian) boatman who propels a gondola | Synonyms: gondoliere |
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| gondoliere | (noun) a (Venetian) boatman who propels a gondola | Synonyms: gondolier |
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| goner | (noun) a person in desperate straits; someone doomed | Synonyms: toast |
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| gong | (noun) a percussion instrument consisting of a metal plate that is struck with a softheaded drumstick | Synonyms: tam-tam |
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| (noun) a percussion instrument consisting of a set of tuned bells that are struck with a hammer; used as an orchestral instrument | Synonyms: bell, chime |
| gonif | (noun) (Yiddish) a thief or dishonest person or scoundrel (often used as a general term of abuse) | Synonyms: ganef, ganof, goniff |
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| goniff | (noun) (Yiddish) a thief or dishonest person or scoundrel (often used as a general term of abuse) | Synonyms: ganef, ganof, gonif |
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| goniometer | (noun) direction finder that determines the angular direction of incoming radio signals | - |
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| gonion | (noun) the craniometric point on either side at the apex of the lower jaw | - |
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| gonioscopy | (noun) an examination of the front part of the eye to check the angle where the iris meets the cornea; it is used to distinguish between open-angle glaucoma and closed-angle glaucoma | - |
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| gonococcus | (noun) the pus-producing bacterium that causes gonorrhea | Synonyms: Neisseria gonorrhoeae |
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| gonorrhea | (noun) a common venereal disease caused by the bacterium Neisseria gonorrhoeae; symptoms are painful urination and pain around the urethra | Synonyms: clap, gonorrhoea |
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| gonorrhoea | (noun) a common venereal disease caused by the bacterium Neisseria gonorrhoeae; symptoms are painful urination and pain around the urethra | Synonyms: clap, gonorrhea |
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| gorgonian | (noun) corals having a horny or calcareous branching skeleton | Synonyms: gorgonian coral |
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| gorgonzola | (noun) Italian blue cheese | - |
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| heptagon | (noun) a seven-sided polygon | - |
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| hexagon | (noun) a six-sided polygon | - |
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| hypogonadism | (noun) incompetence of the gonads (especially in the male with low testosterone); results in deficient development of secondary sex characteristics and (in prepubertal males) a body with long legs and a short trunk | - |
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| isogon | (noun) an equiangular polygon | - |
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| isogone | (noun) an imaginary line connecting points on the Earth's surface where the magnetic declination is the same | Synonyms: isogonal line, isogonic line |
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| jargon | (noun) a characteristic language of a particular group (as among thieves) | Synonyms: argot, cant, lingo, patois, slang, vernacular |
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| (noun) specialized technical terminology characteristic of a particular subject | - |
| (noun) a colorless (or pale yellow or smoky) variety of zircon | Synonyms: jargoon |
| lingonberry | (noun) tart red berries similar to American cranberries but smaller | Synonyms: cowberry, lowbush cranberry, mountain cranberry |
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| (noun) low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries | Synonyms: cowberry, foxberry, lingberry, lingenberry, mountain cranberry, Vaccinium vitis-idaea |
| mangonel | (noun) catapult operated by manpower pulling cords attached to a lever and slign to launch projectiles | Synonyms: bricole, traction trebuchet |
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| martagon | (noun) lily with small dull purple flowers of northwestern Europe and northwestern Asia | Synonyms: Lilium martagon, Turk's-cap |
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| milkwagon | (noun) wagon for delivering milk | Synonyms: milk wagon |
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| nonagon | (noun) a nine-sided polygon | - |
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| octagon | (noun) an eight-sided polygon | - |
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| oligonucleotide | (noun) (biochemistry) a polynucleotide whose molecules contain relatively few nucleotides | Synonyms: oligo |
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| orthogonality | (noun) the quality of lying or intersecting at right angles | - |
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| (noun) the relation of opposition between things at right angles | Synonyms: orthogonal opposition, perpendicularity |
| paragon | (noun) an ideal instance; a perfect embodiment of a concept | Synonyms: beau ideal, idol, perfection |
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| (noun) model of excellence or perfection of a kind; one having no equal | Synonyms: apotheosis, ideal, nonesuch, nonpareil, nonsuch, saint |
| paragonite | (noun) a colorless or pale brown mica with sodium | - |
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| pendragon | (noun) the supreme war chief of the ancient Britons | - |
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| pentagon | (noun) a five-sided polygon | - |
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| perigon | (noun) an angle of 360 degrees | Synonyms: round angle |
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| perigone | (noun) collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils | Synonyms: chlamys, floral envelope, perianth, perigonium |
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| perigonium | (noun) collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils | Synonyms: chlamys, floral envelope, perianth, perigone |
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| pogonia | (noun) any hardy bog orchid of the genus Pogonia: terrestrial orchids having slender rootstocks and erect stems bearing one or a few leaves and a solitary terminal flower | - |
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| pogonion | (noun) the craniometric point that is the most forward-projecting point on the anterior surface of the chin | - |
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| pogonip | (noun) a dense winter fog containing ice particles | Synonyms: ice fog |
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| pogonophoran | (noun) slender animal with tentacles and a tubelike outer covering; lives on the deep ocean bottom | Synonyms: beard worm |
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| polygon | (noun) a closed plane figure bounded by straight sides | Synonyms: polygonal shape |
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| protagonism | (noun) active support of an idea or cause etc.; especially the act of pleading or arguing for something | Synonyms: advocacy |
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| protagonist | (noun) a person who backs a politician or a team etc. | Synonyms: admirer, booster, champion, friend, supporter |
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| (noun) the principal character in a work of fiction | Synonyms: agonist |
| pteropogon | (noun) southern Australian plant having feathery hairs surrounding the fruit | Synonyms: Pteropogon humboltianum |
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| pycnogonid | (noun) any of various small spiderlike marine arthropods having small thin bodies and long slender legs | Synonyms: sea spider |
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| schizogony | (noun) asexual reproduction by multiple fission; characteristic of many sporozoan protozoans | - |
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| snapdragon | (noun) a garden plant of the genus Antirrhinum having showy white or yellow or crimson flowers resembling the face of a dragon | - |
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| tarragon | (noun) fresh leaves (or leaves preserved in vinegar) used as seasoning | Synonyms: estragon |
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| (noun) aromatic perennial of southeastern Russia | Synonyms: Artemisia dracunculus, estragon |
| tetragon | (noun) a four-sided polygon | Synonyms: quadrangle, quadrilateral |
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| tettigoniid | (noun) grasshoppers with long threadlike antennae and well-developed stridulating organs on the forewings of the male | Synonyms: long-horned grasshopper |
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| theogony | (noun) the study of the origins and genealogy of the gods | - |
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| tigon | (noun) offspring of a male tiger and a female lion | Synonyms: tiglon |
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| trigon | (noun) a triangular lyre of ancient Greece and Rome | - |
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| (noun) (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees | Synonyms: triplicity |
| (noun) a three-sided polygon | Synonyms: triangle, trilateral |
| trigonometrician | (noun) a mathematician specializing in trigonometry | - |
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| trigonometry | (noun) the mathematics of triangles and trigonometric functions | Synonyms: trig |
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| trogon | (noun) forest bird of warm regions of the New World having brilliant lustrous plumage and long tails | - |
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| undecagon | (noun) an eleven-sided polygon | - |
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| waggon | (noun) any of various kinds of wheeled vehicles drawn by an animal or a tractor | Synonyms: wagon |
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| (noun) a car that has a long body and rear door with space behind rear seat | Synonyms: beach waggon, beach wagon, estate car, station waggon, station wagon, wagon |
| waggoner | (noun) the driver of a wagon | Synonyms: wagoner |
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| waggonwright | (noun) a wagon maker | Synonyms: wagonwright, wainwright |
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| wagon | (noun) any of various kinds of wheeled vehicles drawn by an animal or a tractor | Synonyms: waggon |
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| (noun) a car that has a long body and rear door with space behind rear seat | Synonyms: beach waggon, beach wagon, estate car, station waggon, station wagon, waggon |
| (noun) van used by police to transport prisoners | Synonyms: black Maria, paddy wagon, patrol wagon, police van, police wagon |
| (noun) a child's four-wheeled toy cart sometimes used for coasting | Synonyms: coaster wagon |
| wagoner | (noun) the driver of a wagon | Synonyms: waggoner |
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| wagonwright | (noun) a wagon maker | Synonyms: waggonwright, wainwright |
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