| chachalaca | (noun) slender arboreal guan resembling a wild turkey; native to Central America and Mexico; highly regarded as game birds | - |
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| chalaza | (noun) one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell | - |
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| (noun) basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined | - |
| chalazion | (noun) a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked | Synonyms: Meibomian cyst |
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| challah | (noun) (Judaism) a loaf of white bread containing eggs and leavened with yeast; often formed into braided loaves and glazed with eggs before baking | Synonyms: hallah |
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| chamberlain | (noun) the treasurer of a municipal corporation | - |
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| (noun) an officer who manages the household of a king or nobleman | - |
| chaplain | (noun) a clergyman ministering to some institution | - |
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| chaplaincy | (noun) the position of chaplain | Synonyms: chaplainship |
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| chaplainship | (noun) the position of chaplain | Synonyms: chaplaincy |
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| charlatan | (noun) a flamboyant deceiver; one who attracts customers with tricks or jokes | Synonyms: mountebank |
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| charlatanism | (noun) the dishonesty of a charlatan | Synonyms: quackery |
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| chatelaine | (noun) a chain formerly worn at the waist by women; for carrying a purse or bunch of keys etc. | - |
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| (noun) the mistress of a chateau or large country house | - |
| chela | (noun) a Hindu disciple of a swami | - |
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| (noun) a grasping structure on the limb of a crustacean or other arthropods | Synonyms: claw, nipper, pincer |
| chelate | (adjective) having or resembling chelae or claws | - |
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| (adjective) relating to or characterized by chelation | Synonyms: chelated |
| (noun) a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions | Synonyms: chelate compound |
| (verb) form a chelate, in chemistry | - |
| chelated | (adjective) relating to or characterized by chelation | Synonyms: chelate |
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| chelation | (noun) the process of forming a ring by forming one or more hydrogen bonds | - |
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| (noun) (medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning | - |
| cherimolla | (noun) large tropical fruit with leathery skin and soft pulp; related to custard apples | Synonyms: cherimoya |
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| chilblain | (noun) inflammation of the hands and feet caused by exposure to cold and moisture | Synonyms: chilblains, pernio |
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| chilblained | (adjective) having chilblains | - |
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| chilblains | (noun) inflammation of the hands and feet caused by exposure to cold and moisture | Synonyms: chilblain, pernio |
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| chinchilla | (noun) small rodent with soft pearly grey fur; native to the Andes but bred in captivity for fur | Synonyms: Chinchilla laniger |
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| (noun) a thick twilled fabric of wool and cotton | - |
| (noun) the expensive silvery grey fur of the chinchilla | - |
| chipolata | (noun) a small thin sausage | - |
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| chlamydeous | (adjective) having a floral envelope or perianth consisting of a calyx and/or corolla | - |
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| chlamydia | (noun) coccoid rickettsia infesting birds and mammals; cause infections of eyes and lungs and genitourinary tract | - |
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| (noun) a sexually transmitted infection caused by bacteria of the genus Chlamydia | - |
| chlamydial | (adjective) of or pertaining to the sexually transmitted infection or to the parasite | - |
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| chlamydospore | (noun) thick-walled asexual resting spore of certain fungi and algae | - |
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| chlamyphore | (noun) very small Argentine armadillo with pale silky hair and pink plates on head and neck | Synonyms: Chlamyphorus truncatus, fairy armadillo, pichiciago, pichiciego |
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| chlamys | (noun) a short mantle or cape fastened at the shoulder; worn by men in ancient Greece | - |
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| (noun) collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils | Synonyms: floral envelope, perianth, perigone, perigonium |
| chlorella | (noun) any alga of the genus Chlorella | - |
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| chloroplast | (noun) plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis | - |
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| chloroplatinate | (noun) any salt of chloroplatinic acid. | - |
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| chocolate | (noun) a medium brown to dark-brown color | Synonyms: burnt umber, coffee, deep brown, umber |
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| (noun) a food made from roasted ground cacao beans | - |
| (noun) a beverage made from cocoa powder and milk and sugar; usually drunk hot | Synonyms: cocoa, drinking chocolate, hot chocolate |
| cholangiography | (noun) roentgenographic examination of the bile ducts after a contrast medium has been injected | - |
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| cholangitis | (noun) inflammation of the bile ducts | - |
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| cholla | (noun) arborescent cacti having very spiny cylindrical stem segments; southwestern United States and Mexico | Synonyms: Opuntia cholla |
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| chorioallantois | (noun) the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois | Synonyms: chorioallantoic membrane |
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| christella | (noun) any of several tropical ferns of the genus Christella having thin brittle fronds | - |
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| chromoblastomycosis | (noun) a fungal infection characterized by itchy warty nodules on the skin | - |
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| chromoplast | (noun) plastid containing pigments other than chlorophyll usually yellow or orange carotenoids | - |
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| chuckwalla | (noun) a herbivorous lizard that lives among rocks in the arid parts of southwestern United States and Mexico | Synonyms: Sauromalus obesus |
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| chylaceous | (adjective) consisting of chyle or having the properties of chyle | Synonyms: chylous |
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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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| 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 |
| circular | (adjective) having the shape or form of a circle | Synonyms: round |
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| (adjective) describing a circle; moving in a circle | Synonyms: orbitual, rotary |
| (noun) an advertisement (usually printed on a page or in a leaflet) intended for wide distribution | Synonyms: bill, broadsheet, broadside, flier, flyer, handbill, throwaway |
| circularisation | (noun) circulating printed notices as a means of advertising | Synonyms: circularization |
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| circularise | (verb) cause to become widely known | Synonyms: broadcast, circularize, circulate, diffuse, disperse, disseminate, distribute, pass around, propagate, spread |
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| (verb) distribute circulars to | Synonyms: circularize |
| (verb) canvass by distributing letters | Synonyms: circularize |
| 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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| circularize | (verb) make circular | - |
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| (verb) cause to become widely known | Synonyms: broadcast, circularise, circulate, diffuse, disperse, disseminate, distribute, pass around, propagate, spread |
| (verb) distribute circulars to | Synonyms: circularise |
| (verb) canvass by distributing letters | Synonyms: circularise |
| (verb) canvass by using a questionnaire | - |
| circularly | (adverb) in a circular manner | - |
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| circulate | (verb) cause to become widely known | Synonyms: broadcast, circularise, circularize, diffuse, disperse, disseminate, distribute, pass around, propagate, spread |
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| (verb) become widely known and passed on | Synonyms: go around, spread |
| (verb) move around freely from person to person or from place to place | - |
| (verb) move through a space, circuit or system, returning to the starting point | - |
| (verb) cause to be distributed | Synonyms: distribute, pass around, pass on |
| (verb) cause to move in a circuit or system | - |
| circulating | (adjective) passing from one to another | - |
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| circulation | (noun) the spread or transmission of something (as news or money) to a wider group or area | - |
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| (noun) the dissemination of copies of periodicals (as newspapers or magazines) | - |
| (noun) free movement or passage (as of cytoplasm within a cell or sap through a plant) | - |
| (noun) movement through a circuit; especially the movement of blood through the heart and blood vessels | - |
| (noun) number of copies of a newspaper or magazine that are sold | - |
| (noun) (library science) the count of books that are loaned by a library over a specified period | - |
| circulative | (adjective) of or relating to circulation | Synonyms: circulatory |
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| circulatory | (adjective) relating to circulatory system or to circulation of the blood | - |
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| (adjective) of or relating to circulation | Synonyms: circulative |
| circumambulate | (verb) walk around something | Synonyms: walk around |
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| circumpolar | (adjective) located or found throughout a polar region | - |
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| (adjective) (of a celestial body) continually visible above the horizon during the entire 360 degrees of daily travel | - |
| circumvallate | (verb) surround with or as if with a rampart or other fortification | - |
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| clabber | (noun) raw milk that has soured and thickened | - |
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| (verb) turn into curds | Synonyms: clot, curdle |
| clack | (noun) a simple valve with a hinge on one side; allows fluid to flow in only one direction | Synonyms: clack valve, clapper valve |
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| (noun) a sharp abrupt noise as if two objects hit together; may be repeated | Synonyms: clap |
| (verb) speak (about unimportant matters) rapidly and incessantly | Synonyms: blab, blabber, chatter, gabble, gibber, maunder, palaver, piffle, prate, prattle, tattle, tittle-tattle, twaddle |
| (verb) make a clucking sounds, characteristic of hens | Synonyms: click, cluck |
| (verb) make a rattling sound | Synonyms: brattle, clatter |
| clad | (adjective) wearing or provided with clothing; sometimes used in combination | Synonyms: clothed |
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| (adjective) having an outer covering especially of thin metal | - |
| cladding | (noun) a protective covering that protects the outside of a building | Synonyms: facing |
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| clade | (noun) a group of biological taxa or species that share features inherited from a common ancestor | - |
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| cladistics | (noun) a taxonomic system of classifying species based on the branching patterns of cladograms that are built to infer phylogenetic relations | Synonyms: cladistic analysis |
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| cladode | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladophyll, phylloclad, phylloclade |
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| cladogram | (noun) a tree diagram used to illustrate phylogenetic relationships | - |
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| cladophyll | (noun) a flattened stem resembling and functioning as a leaf | Synonyms: cladode, phylloclad, phylloclade |
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| claim | (noun) demand for something as rightful or due | - |
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| (noun) an established or recognized right | Synonyms: title |
| (noun) an informal right to something | Synonyms: title |
| (noun) an assertion of a right (as to money or property) | - |
| (noun) a demand | Synonyms: call |
| (noun) an assertion that something is true or factual | - |
| (verb) assert or affirm strongly; state to be true or existing | - |
| (verb) take as an undesirable consequence of some event or state of affairs | Synonyms: exact, take |
| (verb) ask for legally or make a legal claim to, as of debts, for example | - |
| (verb) lay claim to; as of an idea | Synonyms: take |
| (verb) demand as being one's due or property; assert one's right or title to | Synonyms: arrogate, lay claim |
| claimant | (noun) someone who claims a benefit or right or title | - |
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| clairvoyance | (noun) apparent power to perceive things that are not present to the senses | Synonyms: E.S.P., ESP, extrasensory perception, second sight |
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| clairvoyant | (adjective) perceiving things beyond the natural range of the senses | - |
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| (adjective) foreseeing the future | Synonyms: precognitive, second-sighted |
| (noun) someone who has the power of clairvoyance | - |
| clam | (noun) burrowing marine mollusk living on sand or mud; the shell closes with viselike firmness | - |
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| (noun) flesh of either hard-shell or soft-shell clams | - |
| (noun) a piece of paper money worth one dollar | Synonyms: buck, dollar, dollar bill, one dollar bill |
| (verb) gather clams, by digging in the sand by the ocean | - |
| clamant | (adjective) demanding attention | Synonyms: crying, exigent, insistent, instant |
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| (adjective) conspicuously and offensively loud; given to vehement outcry | Synonyms: blatant, clamorous, strident, vociferous |
| clamatorial | (adjective) of or relating to Clamatores | - |
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| clambake | (noun) a cookout at the seashore where clams and fish and other foods are cooked--usually on heated stones covered with seaweed | - |
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| clamber | (noun) an awkward climb | - |
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| (verb) climb awkwardly, as if by scrambling | Synonyms: scramble, shin, shinny, skin, sputter, struggle |
| clammily | (adverb) in a clammy manner | - |
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| clamminess | (noun) unpleasant wetness | Synonyms: dankness |
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| clammy | (adjective) unpleasantly cool and humid | Synonyms: dank |
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| clammyweed | (noun) strong-scented herb common in southern United States covered with intermixed gland and hairs | Synonyms: Polanisia dodecandra, Polanisia graveolens |
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| clamor | (noun) loud and persistent outcry from many people | Synonyms: clamoring, clamour, clamouring, hue and cry |
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| (noun) a loud harsh or strident noise | Synonyms: blare, blaring, cacophony, din |
| (verb) utter or proclaim insistently and noisily | Synonyms: clamour |
| (verb) make loud demands | Synonyms: clamour |
| (verb) compel someone to do something by insistent clamoring | - |
| clamoring | (noun) loud and persistent outcry from many people | Synonyms: clamor, clamour, clamouring, hue and cry |
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| clamorous | (adjective) conspicuously and offensively loud; given to vehement outcry | Synonyms: blatant, clamant, strident, vociferous |
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| clamorously | (adverb) in manner that attracts attention | Synonyms: loudly, obstreperously |
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| clamour | (noun) loud and persistent outcry from many people | Synonyms: clamor, clamoring, clamouring, hue and cry |
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| (verb) utter or proclaim insistently and noisily | Synonyms: clamor |
| (verb) make loud demands | Synonyms: clamor |
| clamouring | (noun) loud and persistent outcry from many people | Synonyms: clamor, clamoring, clamour, hue and cry |
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| clamp | (noun) a device (generally used by carpenters) that holds things firmly together | Synonyms: clinch |
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| (verb) impose or inflict forcefully | - |
| (verb) fasten or fix with a clamp | - |
| clampdown | (noun) sudden restriction on an activity | - |
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| clams | (noun) informal terms for money | Synonyms: boodle, bread, cabbage, dinero, dough, gelt, kale, lettuce, lolly, loot, lucre, moolah, pelf, scratch, shekels, simoleons, sugar, wampum |
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| clamshell | (noun) the shell of a clam | - |
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| (noun) a dredging bucket with hinges like the shell of a clam | Synonyms: grapple |
| clan | (noun) group of people related by blood or marriage | Synonyms: kin, kin group, kindred, kinship group, tribe |
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| clandestine | (adjective) conducted with or marked by hidden aims or methods | Synonyms: cloak-and-dagger, hole-and-corner, hugger-mugger, hush-hush, secret, surreptitious, undercover, underground |
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| clang | (noun) a loud resonant repeating noise | Synonyms: clangor, clangoring, clangour, clank, clash, crash |
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| (verb) make a loud noise | Synonyms: clangor |
| clanger | (noun) a conspicuous mistake whose effects seem to reverberate | - |
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| clanging | (adjective) having a loud resonant metallic sound | Synonyms: clangorous |
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| clangor | (noun) a loud resonant repeating noise | Synonyms: clang, clangoring, clangour, clank, clash, crash |
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| (verb) make a loud resonant noise | Synonyms: clangour |
| (verb) make a loud noise | Synonyms: clang |
| clangoring | (noun) a loud resonant repeating noise | Synonyms: clang, clangor, clangour, clank, clash, crash |
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| clangorous | (adjective) having a loud resonant metallic sound | Synonyms: clanging |
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| clangour | (noun) a loud resonant repeating noise | Synonyms: clang, clangor, clangoring, clank, clash, crash |
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| (verb) make a loud resonant noise | Synonyms: clangor |
| clank | (noun) a loud resonant repeating noise | Synonyms: clang, clangor, clangoring, clangour, clash, crash |
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| (verb) make a clank | - |
| clanker | (noun) something that makes a clanking noise. | - |
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