| beneficiation | (noun) crushing and separating ore into valuable substances or waste by any of a variety of techniques | Synonyms: mineral dressing, mineral extraction, mineral processing, ore dressing, ore processing |
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| benzylpenicillin | (noun) the penicillin that constitutes the principal component of many commercial antibiotics | Synonyms: penicillin G |
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| bioelectricity | (noun) electric phenomena in animals or plants | - |
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| biomedicine | (noun) the branch of medical science that studies the ability of organisms to withstand environmental stress (as in space travel) | - |
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| (noun) the branch of medical science that applies biological and physiological principles to clinical practice | - |
| biophysicist | (noun) a physicist who applies the methods of physics to biology | - |
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| bioscience | (noun) any of the branches of natural science dealing with the structure and behavior of living organisms | Synonyms: life science |
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| bocci | (noun) Italian bowling played on a long narrow dirt court | Synonyms: bocce, boccie |
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| boccie | (noun) Italian bowling played on a long narrow dirt court | Synonyms: bocce, bocci |
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| bombycid | (noun) moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk | Synonyms: bombycid moth, silkworm moth |
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| bounciness | (noun) the quality of a substance that is able to rebound | Synonyms: bounce |
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| bouncing | (noun) rebounding from an impact (or series of impacts) | Synonyms: bounce |
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| bracing | (noun) a structural member used to stiffen a framework | Synonyms: brace |
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| braggadocio | (noun) vain and empty boasting | Synonyms: bluster, rhodomontade, rodomontade |
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| breccia | (noun) a rudaceous rock consisting of sharp fragments embedded in clay or sand | - |
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| brucine | (noun) a bitter alkaloid poison resembling strychnine and extracted from nux vomica | - |
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| cacique | (noun) black-and-red or black-and-yellow orioles of the American tropics | Synonyms: cazique |
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| caecilian | (noun) any of the small slender limbless burrowing wormlike amphibians of the order Gymnophiona; inhabit moist soil in tropical regions | Synonyms: blindworm |
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| calciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: cholecalciferol, D, ergocalciferol, viosterol, vitamin D |
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| calcification | (noun) a process that impregnates something with calcium (or calcium salts) | - |
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| (noun) tissue hardened by deposition of lime salts | - |
| (noun) an inflexible and unchanging state | - |
| calcimine | (noun) a water-base paint containing zinc oxide and glue and coloring; used as a wash for walls and ceilings | - |
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| calcination | (noun) the conversion of metals into their oxides as a result of heating to a high temperature | - |
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| calcite | (noun) a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone | - |
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| calcitonin | (noun) thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone | Synonyms: thyrocalcitonin |
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| calcium | (noun) a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals | Synonyms: atomic number 20, Ca |
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| capaciousness | (noun) spatial largeness and extensiveness (especially inside a building) | Synonyms: commodiousness, roominess, spaciousness |
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| (noun) intellectual breadth | Synonyms: roominess |
| capacitance | (noun) an electrical device characterized by its capacity to store an electric charge | Synonyms: capacitor, condenser, electrical condenser |
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| (noun) an electrical phenomenon whereby an electric charge is stored | Synonyms: capacity, electrical capacity |
| capacitor | (noun) an electrical device characterized by its capacity to store an electric charge | Synonyms: capacitance, condenser, electrical condenser |
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| capacity | (noun) the maximum production possible | - |
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| (noun) a specified function | - |
| (noun) capability to perform or produce | - |
| (noun) tolerance for alcohol | - |
| (noun) the power to learn or retain knowledge; in law, the ability to understand the facts and significance of your behavior | Synonyms: mental ability |
| (noun) an electrical phenomenon whereby an electric charge is stored | Synonyms: capacitance, electrical capacity |
| (noun) the amount that can be contained | Synonyms: content |
| (noun) (computer science) the amount of information (in bytes) that can be stored on a disk drive | - |
| (noun) the susceptibility of something to a particular treatment | Synonyms: capability |
| cappuccino | (noun) equal parts of espresso and hot milk topped with cinnamon and nutmeg and usually whipped cream | Synonyms: cappuccino coffee, coffee cappuccino |
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| capriccio | (noun) an instrumental composition that doesn't adhere to rules for any specific musical form and is played with improvisation | - |
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| capriciousness | (noun) the trait of acting unpredictably and more from whim or caprice than from reason or judgment | Synonyms: arbitrariness, flightiness, whimsey, whimsicality, whimsy |
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| (noun) the quality of being guided by sudden unpredictable impulses | Synonyms: unpredictability |
| 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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| carbomycin | (noun) a colorless basic antibiotic that inhibits the growth of Gram-positive organisms | - |
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| carcinogen | (noun) any substance that produces cancer | - |
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| carcinoid | (noun) a small tumor (benign or malignant) arising from the mucosa of the gastrointestinal tract; usually associated with excessive secretion of serotonin | - |
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| carcinoma | (noun) any malignant tumor derived from epithelial tissue; one of the four major types of cancer | - |
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| carcinosarcoma | (noun) a malignant neoplasm composed of carcinoma and sarcoma extensively intermixed | - |
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| catholicity | (noun) the quality of being universal; existing everywhere | Synonyms: universality |
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| cecity | (noun) the state of being blind or lacking sight | Synonyms: blindness, sightlessness |
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| cephaloglycin | (noun) antibiotic related to cephalosporin but no longer in common use | Synonyms: Kafocin |
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| ceramicist | (noun) a craftsman who shapes pottery on a potter's wheel and bakes them in a kiln | Synonyms: ceramist, potter, thrower |
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| cervicitis | (noun) inflammation of the uterine cervix | - |
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| chalcid | (noun) any of various tiny insects whose larvae are parasites on eggs and larvae of other insects; many are beneficial in destroying injurious insects | Synonyms: chalcid fly, chalcid wasp, chalcidfly |
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| chalcidfly | (noun) any of various tiny insects whose larvae are parasites on eggs and larvae of other insects; many are beneficial in destroying injurious insects | Synonyms: chalcid, chalcid fly, chalcid wasp |
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| chalcocite | (noun) a heavy grey mineral that is an ore of copper | Synonyms: copper glance |
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| characid | (noun) any freshwater fish of the family Characinidae | Synonyms: characin, characin fish |
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| characin | (noun) any freshwater fish of the family Characinidae | Synonyms: characid, characin fish |
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| chiocciole | (noun) a type of pasta that is elbow-shaped. | - |
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| chlorambucil | (noun) an alkylating agent (trade name Leukeran) used to treat some kinds of cancer | Synonyms: Leukeran |
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| chlorofucin | (noun) the chlorophyll present in brown algae, diatoms, and flagellates | Synonyms: chlorophyll c |
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| cholecalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, D, ergocalciferol, viosterol, vitamin D |
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| chromaticity | (noun) the quality of a color as determined by its dominant wavelength | Synonyms: hue |
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| ciao | (noun) an acknowledgment that can be used to say hello or goodbye (aloha is Hawaiian and ciao is Italian) | Synonyms: aloha |
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| cicada | (noun) stout-bodied insect with large membranous wings; male has drum-like organs for producing a high-pitched drone | Synonyms: cicala |
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| cicala | (noun) stout-bodied insect with large membranous wings; male has drum-like organs for producing a high-pitched drone | Synonyms: cicada |
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| cicatrice | (noun) a mark left (usually on the skin) by the healing of injured tissue | Synonyms: cicatrix, scar |
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| cicatrix | (noun) a mark left (usually on the skin) by the healing of injured tissue | Synonyms: cicatrice, scar |
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| cicero | (noun) a linear unit of the size of type slightly larger than an em | - |
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| cicerone | (noun) a guide who conducts and informs sightseers | - |
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| cichlid | (noun) freshwater fishes of tropical America and Africa and Asia similar to American sunfishes; some are food fishes; many small ones are popular in aquariums | Synonyms: cichlid fish |
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| cider | (noun) a beverage made from juice pressed from apples | Synonyms: cyder |
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| ciderpress | (noun) a press that is used to extract the juice from apples | - |
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| cigar | (noun) a roll of tobacco for smoking | - |
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| cigaret | (noun) finely ground tobacco wrapped in paper; for smoking | Synonyms: butt, cigarette, coffin nail, fag |
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| cigarette | (noun) finely ground tobacco wrapped in paper; for smoking | Synonyms: butt, cigaret, coffin nail, fag |
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| cigarfish | (noun) small fusiform fish of western Atlantic | Synonyms: Decapterus punctatus, quiaquia, round scad |
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| cigarillo | (noun) small cigar or cigarette wrapped in tobacco instead of paper | - |
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| cilantro | (noun) parsley-like herb used as seasoning or garnish | Synonyms: Chinese parsley, coriander |
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| (noun) Old World herb with aromatic leaves and seed resembling parsley | Synonyms: Chinese parsley, coriander, coriander plant, Coriandrum sativum |
| ciliate | (noun) a protozoan with a microscopic appendage extending from the surface of the cell | Synonyms: ciliated protozoan, ciliophoran |
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| ciliophoran | (noun) a protozoan with a microscopic appendage extending from the surface of the cell | Synonyms: ciliate, ciliated protozoan |
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| cilium | (noun) a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms | - |
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| (noun) any of the short curved hairs that grow from the edges of the eyelids | Synonyms: eyelash, lash |
| cimarron | (noun) wild sheep of mountainous regions of western North America having massive curled horns | Synonyms: bighorn, bighorn sheep, Ovis canadensis, Rocky Mountain bighorn, Rocky Mountain sheep |
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| cimetidine | (noun) a drug (trade name Tagamet) used to treat peptic ulcers by decreasing the secretion of stomach acid | Synonyms: Tagamet |
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| cinch | (noun) a form of all fours in which the players bid for the privilege of naming trumps | - |
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| (noun) any undertaking that is easy to do | Synonyms: breeze, child's play, duck soup, picnic, piece of cake, pushover, snap, walkover |
| (noun) stable gear consisting of a band around a horse's belly that holds the saddle in place | Synonyms: girth |
| cinchona | (noun) any of several trees of the genus Cinchona | Synonyms: chinchona |
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| (noun) medicinal bark of cinchona trees; source of quinine and quinidine | Synonyms: cinchona bark, Jesuit's bark, Peruvian bark |
| cinchonine | (noun) an alkaloid derivative of the bark of cinchona trees that is used as an antimalarial drug | - |
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| cincture | (noun) a band of material around the waist that strengthens a skirt or trousers | Synonyms: girdle, sash, waistband, waistcloth |
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| cinder | (noun) a fragment of incombustible matter left after a wood or coal or charcoal fire | Synonyms: clinker |
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| cinema | (noun) a theater where films are shown | Synonyms: movie house, movie theater, movie theatre, picture palace |
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| (noun) a medium that disseminates moving pictures | Synonyms: celluloid, film |
| cinematographer | (noun) a photographer who operates a movie camera | Synonyms: camera operator, cameraman |
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| cinematography | (noun) the act of making a film | Synonyms: filming, motion-picture photography |
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| cineraria | (noun) herb of Canary Islands widely cultivated for its blue or purple or red or variegated daisylike flowers | Synonyms: Pericallis cruenta, Senecio cruentus |
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| cinerarium | (noun) a niche for a funeral urn containing the ashes of the cremated dead | Synonyms: columbarium |
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| cingulum | (noun) (anatomy) an encircling structure (as the ridge around the base of a tooth) | - |
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| cinnabar | (noun) large red-and-black European moth; larvae feed on leaves of ragwort; introduced into United States to control ragwort | Synonyms: Callimorpha jacobeae, cinnabar moth |
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| (noun) a heavy reddish mineral consisting of mercuric sulfide; the chief source of mercury | - |
| cinnamene | (noun) a colorless oily liquid; the monomer for polystyrene | Synonyms: phenylethylene, styrene, vinylbenzene |
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| cinnamon | (noun) spice from the dried aromatic bark of the Ceylon cinnamon tree; used as rolled strips or ground | - |
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| (noun) tropical Asian tree with aromatic yellowish-brown bark; source of the spice cinnamon | Synonyms: Ceylon cinnamon, Ceylon cinnamon tree, Cinnamomum zeylanicum |
| (noun) aromatic bark used as a spice | Synonyms: cinnamon bark |
| cinque | (noun) the cardinal number that is the sum of four and one | Synonyms: 5, fin, five, fivesome, Little Phoebe, pentad, Phoebe, quint, quintet, quintuplet, V |
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| cinquefoil | (noun) an ornamental carving consisting of five arcs arranged in a circle | - |
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| (noun) any of a numerous plants grown for their five-petaled flowers; abundant in temperate regions; alleged to have medicinal properties | Synonyms: five-finger |
| cipher | (noun) a secret method of writing | Synonyms: cryptograph, cypher, secret code |
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| (noun) a message written in a secret code | Synonyms: cypher |
| (noun) a person of no influence | Synonyms: cypher, nobody, nonentity |
| (noun) a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential | Synonyms: aught, cypher, goose egg, nada, naught, nil, nix, nothing, null, zero, zilch, zip, zippo |
| (noun) a mathematical element that when added to another number yields the same number | Synonyms: 0, cypher, nought, zero |
| ciprofloxacin | (noun) an oral antibiotic (trade name Cipro) used against serious bacterial infections of the skin or respiratory tract or urinary tract or bones or joints | Synonyms: Cipro |
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| circle | (noun) movement once around a course | Synonyms: circuit, lap |
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| (noun) any circular or rotating mechanism | Synonyms: round |
| (noun) a road junction at which traffic streams circularly around a central island | Synonyms: rotary, roundabout, traffic circle |
| (noun) a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra | Synonyms: dress circle |
| (noun) street names for flunitrazepam | Synonyms: forget me drug, Mexican valium, R-2, roach, roofy, rope, rophy |
| (noun) an unofficial association of people or groups | Synonyms: band, lot, set |
| (noun) ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point | - |
| (noun) something approximating the shape of a circle | - |
| circlet | (noun) decorated metal band worn around the head | - |
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| (noun) a small circle | - |
| circuit | (noun) a journey or route all the way around a particular place or area | Synonyms: tour |
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| (noun) movement once around a course | Synonyms: circle, lap |
| (noun) an electrical device that provides a path for electrical current to flow | Synonyms: electric circuit, electrical circuit |
| (noun) a racetrack for automobile races | Synonyms: racing circuit |
| (noun) (law) a judicial division of a state or the United States (so-called because originally judges traveled and held court in different locations); one of the twelve groups of states in the United States that is covered by a particular circuit court of appeals | - |
| (noun) an established itinerary of venues or events that a particular group of people travel to | - |
| (noun) the boundary line encompassing an area or object | Synonyms: circumference |
| circuitousness | (noun) The state of being roundabout, indirect or not to the point. | - |
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| circuitry | (noun) electronic equipment consisting of a system of circuits | - |
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| circular | (noun) an advertisement (usually printed on a page or in a leaflet) intended for wide distribution | Synonyms: bill, broadsheet, broadside, flier, flyer, handbill, throwaway |
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| circularisation | (noun) circulating printed notices as a means of advertising | Synonyms: circularization |
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| circularity | (noun) the roundness of a 2-dimensional figure | Synonyms: disk shape |
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| circularization | (noun) circulating printed notices as a means of advertising | Synonyms: circularisation |
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