| amidships | (adverb) at or near or toward the center of a ship | Synonyms: amidship, midships |
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| anapsid | (noun) primitive reptile having no opening in the temporal region of the skull; all extinct except turtles | Synonyms: anapsid reptile |
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| anomalops | (noun) fish having a luminous organ beneath eye; of warm waters of the western Pacific and Puerto Rico | Synonyms: flashlight fish |
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| antipsychotic | (noun) tranquilizer used to treat psychotic conditions when a calming effect is desired | Synonyms: antipsychotic agent, antipsychotic drug, major tranquilizer, major tranquilliser, major tranquillizer, neuroleptic, neuroleptic agent, neuroleptic drug |
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| antisepsis | (noun) the process of inhibiting the growth and multiplication of microorganisms | Synonyms: asepsis |
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| (noun) (of non-living objects) the state of being free of pathogenic organisms | Synonyms: asepsis, sterileness, sterility |
| apoapsis | (noun) (astronomy) the point in an orbit farthest from the body being orbited | Synonyms: point of apoapsis |
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| apocalypse | (noun) a cosmic cataclysm in which God destroys the ruling powers of evil | - |
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| apse | (noun) a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar | Synonyms: apsis |
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| apsidal | (adjective) of or relating to an apse | - |
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| apsis | (noun) a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar | Synonyms: apse |
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| asepsis | (noun) the process of inhibiting the growth and multiplication of microorganisms | Synonyms: antisepsis |
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| (noun) (of non-living objects) the state of being free of pathogenic organisms | Synonyms: antisepsis, sterileness, sterility |
| autopsy | (noun) an examination and dissection of a dead body to determine cause of death or the changes produced by disease | Synonyms: necropsy, PM, post-mortem, post-mortem examination, postmortem, postmortem examination |
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| (verb) perform an autopsy on a dead body; do a post-mortem | - |
| bicapsular | (adjective) divided into two capsules or having a two-part capsule | - |
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| biceps | (noun) any skeletal muscle having two origins (but especially the muscle that flexes the forearm) | - |
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| biopsy | (noun) examination of tissues or liquids from the living body to determine the existence or cause of a disease | - |
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| bps | (noun) (computer science) the rate at which data is transferred (as by a modem) | Synonyms: bits per second |
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| calliopsis | (noun) North American annual widely cultivated for its yellow flowers with purple-red to brownish centers; in some classifications placed in a subgenus Calliopsis | Synonyms: Coreopsis tinctoria |
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| calypso | (noun) rare north temperate bog orchid bearing a solitary white to pink flower marked with purple at the tip of an erect reddish stalk above 1 basal leaf | Synonyms: Calypso bulbosa, fairy-slipper |
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| campsite | (noun) a site where people on holiday can pitch a tent | Synonyms: bivouac, campground, camping area, camping ground, camping site, encampment |
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| campstool | (noun) a folding stool | - |
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| capsaicin | (noun) colorless pungent crystalline compound derived from capsicum; source of the hotness of hot peppers of the genus Capsicum such as chili and cayenne and jalapeno | - |
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| capsicum | (noun) any of various tropical plants of the genus Capsicum bearing peppers | Synonyms: capsicum pepper plant, pepper |
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| capsid | (noun) the outer covering of protein surrounding the nucleic acid of a virus | - |
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| (noun) a variety of leaf bug | Synonyms: mirid, mirid bug |
| capsize | (verb) overturn accidentally | Synonyms: turn turtle, turtle |
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| capsizing | (noun) (nautical) the event of a boat accidentally turning over in the water | - |
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| capstan | (noun) a windlass rotated in a horizontal plane around a vertical axis; used on ships for weighing anchor or raising heavy sails | - |
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| capstone | (noun) a stone that forms the top of wall or building | Synonyms: copestone, coping stone, stretcher |
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| (noun) a final touch; a crowning achievement; a culmination | Synonyms: copestone, finishing touch |
| capsular | (adjective) of or relating to a capsule | - |
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| (adjective) resembling a capsule | - |
| capsulate | (adjective) used of seeds or spores that are enclosed in a capsule | Synonyms: capsulated |
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| (verb) enclose in a capsule | Synonyms: capsule, capsulise, capsulize |
| capsulated | (adjective) used of seeds or spores that are enclosed in a capsule | Synonyms: capsulate |
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| capsule | (noun) a pill in the form of a small rounded gelatinous container with medicine inside | - |
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| (noun) a spacecraft designed to transport people and support human life in outer space | Synonyms: space capsule |
| (noun) a small container | - |
| (noun) a pilot's seat in an airplane that can be forcibly ejected in the case of an emergency; then the pilot descends by parachute | Synonyms: ejection seat, ejector seat |
| (noun) a structure that encloses a body part | - |
| (noun) a shortened version of a written work | Synonyms: abridgement, abridgment, condensation |
| (noun) a dry dehiscent seed vessel or the spore-containing structure of e.g. mosses | - |
| (verb) put in a short or concise form; reduce in volume | Synonyms: capsulise, capsulize, encapsulate |
| (verb) enclose in a capsule | Synonyms: capsulate, capsulise, capsulize |
| capsulise | (verb) put in a short or concise form; reduce in volume | Synonyms: capsule, capsulize, encapsulate |
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| (verb) enclose in a capsule | Synonyms: capsulate, capsule, capsulize |
| capsulize | (verb) put in a short or concise form; reduce in volume | Synonyms: capsule, capsulise, encapsulate |
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| (verb) enclose in a capsule | Synonyms: capsulate, capsule, capsulise |
| caryopsis | (noun) dry seed-like fruit produced by the cereal grasses: e.g. wheat, barley, Indian corn | Synonyms: grain |
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| catalepsy | (noun) a trancelike state with loss of voluntary motion and failure to react to stimuli | - |
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| ceratopsian | (noun) any of several four-footed herbivorous dinosaurs with enormous beaked skulls; of the late Cretaceous in North America and Mongolia | Synonyms: horned dinosaur |
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| cheapskate | (noun) a miserly person | Synonyms: tightwad |
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| chips | (noun) strips of potato fried in deep fat | Synonyms: french-fried potatoes, french fries, fries |
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| chopsteak | (noun) a patty of ground cooked beef | Synonyms: beef patty, chop steak, chopped steak, hamburger steak |
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| chopstick | (noun) one of a pair of slender sticks used as oriental tableware to eat food with | - |
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| clepsydra | (noun) clock that measures time by the escape of water | Synonyms: water clock, water glass |
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| collapsable | (adjective) capable of collapsing or being collapsed | Synonyms: collapsible |
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| collapse | (noun) the act of throwing yourself down; collapse; sink | Synonyms: flop |
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| (noun) a natural event caused by something suddenly falling down or caving in | - |
| (noun) a sudden large decline of business or the prices of stocks (especially one that causes additional failures) | Synonyms: crash |
| (noun) an abrupt failure of function or complete physical exhaustion | Synonyms: prostration |
| (verb) collapse due to fatigue, an illness, or a sudden attack | Synonyms: break down |
| (verb) lose significance, effectiveness, or value | - |
| (verb) suffer a nervous breakdown | Synonyms: break up, crack, crack up, crock up |
| (verb) break down, literally or metaphorically | Synonyms: break, cave in, fall in, founder, give, give way |
| (verb) fold or close up | - |
| (verb) fall apart | Synonyms: break down, crumble, crumple, tumble |
| (verb) cause to burst | Synonyms: burst |
| collapsible | (adjective) capable of collapsing or being collapsed | Synonyms: collapsable |
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| compsognathus | (noun) very small bipedal carnivorous dinosaur of the late Jurassic in Bavaria | - |
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| contretemps | (noun) an awkward clash | - |
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| copse | (noun) a dense growth of bushes | Synonyms: brush, brushwood, coppice, thicket |
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| coreopsis | (noun) any of numerous plants of the genus Coreopsis having a profusion of showy usually yellow daisylike flowers over long periods; North and South America | Synonyms: tick-weed, tickseed, tickweed |
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| corps | (noun) an army unit usually consisting of two or more divisions and their support | Synonyms: army corps |
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| (noun) a body of people associated together | - |
| corpse | (noun) the dead body of a human being | Synonyms: cadaver, clay, remains, stiff |
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| cps | (noun) the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz) | Synonyms: cycle, cycle per second, cycles/second, hertz, Hz |
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| craps | (noun) a gambling game played with two dice; a first throw of 7 or 11 wins and a first throw of 2, 3, or 12 loses and a first throw of any other number must be repeated to win before a 7 is thrown, which loses the bet and the dice | - |
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| (noun) expressions used when two dice are thrown and both come up showing one spot | Synonyms: snake eyes |
| crapshoot | (noun) playing craps | Synonyms: crap game, crap shooting |
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| (noun) a risky and uncertain venture | - |
| crapshooter | (noun) a gambler who plays the game of craps | - |
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| creamcups | (noun) California plant with small pale yellow flowers | Synonyms: Platystemon californicus |
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| creeps | (noun) a feeling of fear and revulsion | - |
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| (noun) a disease of cattle and sheep attributed to a dietary deficiency; characterized by anemia and softening of the bones and a slow stiff gait | - |
| cyclops | (noun) minute free-swimming freshwater copepod having a large median eye and pear-shaped body and long antennae used in swimming; important in some food chains and as intermediate hosts of parasitic worms that affect man e.g. Guinea worms | Synonyms: water flea |
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| dapsone | (noun) antibacterial drug used to treat leprosy and some kinds of skin diseases | - |
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| diapsid | (noun) reptile having a pair of openings in the skull behind each eye | Synonyms: diapsid reptile |
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| dichromatopsia | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromacy, dichromasy, dichromatism, dichromia |
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| dipsomania | (noun) an intense persistent desire to drink alcoholic beverages to excess | Synonyms: alcoholism, potomania |
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| dipsomaniac | (noun) a person who drinks alcohol to excess habitually | Synonyms: alcoholic, alky, boozer, lush, soaker, souse |
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| dipstick | (noun) a graduated rod dipped into a container to indicate the fluid level | - |
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| dripstone | (noun) a protective drip that is made of stone | Synonyms: hoodmold, hoodmould |
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| (noun) the form of calcium carbonate found in stalactites and stalagmites | - |
| dropseed | (noun) a grass of the genus Sporobolus | Synonyms: drop-seed |
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| dropsical | (adjective) swollen with an excessive accumulation of fluid | Synonyms: edematous |
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| dropsy | (noun) swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities | Synonyms: edema, hydrops, oedema |
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| dumps | (noun) an informal expression for a mildly depressed state | Synonyms: mopes |
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| dumpsite | (noun) a piece of land where waste materials are dumped | Synonyms: dump, garbage dump, rubbish dump, trash dump, waste-yard, wasteyard |
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| dyspepsia | (noun) a disorder of digestive function characterized by discomfort or heartburn or nausea | Synonyms: indigestion, stomach upset, upset stomach |
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| eclampsia | (noun) a toxic condition characterized by convulsions and possibly coma during or immediately after pregnancy | - |
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| eclipse | (noun) one celestial body obscures another | Synonyms: occultation |
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| (verb) cause an eclipse of (a celestial body) by intervention | Synonyms: occult |
| (verb) be greater in significance than | Synonyms: dominate, overshadow |
| eclipsis | (noun) omission or suppression of parts of words or sentences | Synonyms: ellipsis |
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| elapse | (verb) for time to move forward | Synonyms: glide by, go along, go by, lapse, pass, slide by, slip away, slip by |
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| elapsed | (adjective) (of time) having passed or slipped by | - |
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| ellipse | (noun) a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it | Synonyms: oval |
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| ellipsis | (noun) omission or suppression of parts of words or sentences | Synonyms: eclipsis |
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| ellipsoid | (adjective) having the nature or shape of an ellipsoid | Synonyms: ellipsoidal, spheroidal |
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| (noun) a surface whose plane sections are all ellipses or circles | - |
| ellipsoidal | (adjective) having the nature or shape of an ellipsoid | Synonyms: ellipsoid, spheroidal |
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| encapsulate | (verb) put in a short or concise form; reduce in volume | Synonyms: capsule, capsulise, capsulize |
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| (verb) enclose in a capsule or other small container | - |
| encapsulation | (noun) the process of enclosing (as in a capsule) | - |
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| (noun) the condition of being enclosed (as in a capsule) | - |
| endopsammon | (noun) The microscopic fauna of sand and mud. | - |
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| epanalepsis | (noun) repetition after intervening words | - |
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| epilepsy | (noun) a disorder of the central nervous system characterized by loss of consciousness and convulsions | - |
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| epipsammon | (noun) Microscopic flora and fauna found on the surface of and/or attached to sand grains. | - |
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| epsilon | (noun) the 5th letter of the Greek alphabet | - |
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| fasciolopsiasis | (noun) infestation with the large intestinal fluke Fasciolopsis buski; common in eastern Asia | - |
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| flaps | (noun) a movable airfoil that is part of an aircraft wing; used to increase lift or drag | Synonyms: flap |
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| forceps | (noun) an extractor consisting of a pair of pincers used in medical treatment (especially for the delivery of babies) | - |
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| gipsy | (noun) a laborer who moves from place to place as demanded by employment | Synonyms: gypsy, itinerant |
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| (noun) a person who resembles a Romani in leading an unconventional, nomadic way of life | Synonyms: gypsy |
| gipsywort | (noun) hairy Eurasian herb with two-lipped white flowers | Synonyms: gypsywort, Lycopus europaeus |
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| glimpse | (noun) a quick look | Synonyms: coup d'oeil, glance |
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| (noun) a brief or incomplete view | - |
| (noun) a vague indication | - |
| (verb) catch a glimpse of or see briefly | - |
| gramps | (noun) the father of your father or mother | Synonyms: grandad, granddad, granddaddy, grandfather, grandpa |
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| gripsack | (noun) a small suitcase | - |
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| gypsum | (noun) a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris) | - |
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| gypsy | (noun) a laborer who moves from place to place as demanded by employment | Synonyms: gipsy, itinerant |
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| (noun) a person who resembles a Romani in leading an unconventional, nomadic way of life | Synonyms: gipsy |
| gypsyweed | (noun) common hairy European perennial with pale blue or lilac flowers in axillary racemes | Synonyms: common speedwell, Veronica officinalis |
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| gypsywort | (noun) hairy Eurasian herb with two-lipped white flowers | Synonyms: gipsywort, Lycopus europaeus |
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| harpsichord | (noun) a clavier with strings that are plucked by plectra mounted on pivots | Synonyms: cembalo |
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| harpsichordist | (noun) someone who plays the harpsichord | - |
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