| chondrosarcoma | (noun) a malignant neoplasm of cartilage cells | - |
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| chondrule | (noun) small granule (of e.g. chrysolite) found in some meteoric rocks | - |
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| choose | (verb) pick out, select, or choose from a number of alternatives | Synonyms: pick out, select, take |
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| (verb) see fit or proper to act in a certain way; decide to act in a certain way | - |
| (verb) select as an alternative over another | Synonyms: opt, prefer |
| chooser | (noun) a person who chooses or selects out | Synonyms: picker, selector |
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| choosey | (adjective) difficult to please | Synonyms: choosy |
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| choosy | (adjective) difficult to please | Synonyms: choosey |
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| chop | (noun) a tennis return made with a downward motion that puts backspin on the ball | Synonyms: chop shot |
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| (noun) a grounder that bounces high in the air | Synonyms: chopper |
| (noun) a jaw | - |
| (noun) a small cut of meat including part of a rib | - |
| (noun) the irregular motion of waves (usually caused by wind blowing in a direction opposite to the tide) | - |
| (verb) hit sharply | - |
| (verb) cut with a hacking tool | Synonyms: hack |
| (verb) cut into pieces with repeated blows | Synonyms: chop up |
| (verb) strike sharply, as in some sports | - |
| (verb) form or shape by chopping | - |
| (verb) move suddenly | - |
| chopfallen | (adjective) brought low in spirit | Synonyms: chapfallen, crestfallen, deflated |
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| chophouse | (noun) a restaurant that specializes in steaks | Synonyms: steakhouse |
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| chopine | (noun) a woman's shoe with a very high thick sole | Synonyms: platform |
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| chopped | (adjective) prepared by cutting | Synonyms: shredded, sliced |
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| chopper | (noun) a grounder that bounces high in the air | Synonyms: chop |
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| (noun) a butcher's knife having a large square blade | Synonyms: cleaver, meat cleaver |
| (noun) an aircraft without wings that obtains its lift from the rotation of overhead blades | Synonyms: eggbeater, helicopter, whirlybird |
| (noun) informal terms for a human `tooth' | Synonyms: pearly |
| choppiness | (noun) used of the sea during inclement or stormy weather | Synonyms: rough water, roughness |
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| choppy | (adjective) rough with small waves | - |
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| (adjective) marked by abrupt transitions | Synonyms: jerky |
| 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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| choragic | (adjective) pertaining to or characteristic of a choragus | - |
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| choragus | (noun) (ancient Greece) leader of a group or festival; leader of a chorus | - |
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| choral | (adjective) related to or written for or performed by a chorus or choir | - |
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| (noun) a stately Protestant (especially Lutheran) hymn tune | Synonyms: chorale |
| chorale | (noun) a stately Protestant (especially Lutheran) hymn tune | Synonyms: choral |
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| chorally | (adverb) by a chorus | - |
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| chord | (noun) a combination of three or more notes that blend harmoniously when sounded together | - |
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| (noun) a straight line connecting two points on a curve | - |
| (verb) bring into consonance, harmony, or accord while making music or singing | Synonyms: harmonise, harmonize |
| (verb) play chords on (a stringed instrument) | - |
| chordal | (adjective) relating to or consisting of or emphasizing chords | - |
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| chordamesoderm | (noun) the area of mesoderm that forms the notochord | Synonyms: chordomesoderm |
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| chordate | (adjective) of or relating to or characteristic of the Chordata | - |
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| (noun) any animal of the phylum Chordata having a notochord or spinal column | - |
| chorditis | (noun) inflammation of the vocal cords | - |
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| (noun) inflammation of the spermatic cord or vocal cords or vocal folds | - |
| chordomesoderm | (noun) the area of mesoderm that forms the notochord | Synonyms: chordamesoderm |
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| chordophone | (noun) a stringed instrument of the group including harps, lutes, lyres, and zithers | - |
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| chore | (noun) a specific piece of work required to be done as a duty or for a specific fee | Synonyms: job, task |
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| chorea | (noun) any of several degenerative nervous disorders characterized by spasmodic movements of the body and limbs | - |
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| (noun) chorea in dogs | Synonyms: canine chorea |
| choreograph | (verb) plan and oversee the development and details of | - |
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| (verb) compose a sequence of dance steps, often to music | - |
| choreographer | (noun) someone who creates new dances | - |
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| choreographic | (adjective) of or concerned with choreography | - |
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| choreography | (noun) a show involving artistic dancing | Synonyms: stage dancing |
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| (noun) the representation of dancing by symbols as music is represented by notes | - |
| (noun) a notation used by choreographers | - |
| choric | (adjective) relating to or written for or in the style of a Greek chorus | - |
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| chorine | (noun) a woman who dances in a chorus line | Synonyms: chorus girl, showgirl |
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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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| choriomeningitis | (noun) a cerebral meningitis with cellular infiltration of the meninges | - |
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| chorion | (noun) the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals) | - |
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| chorionic | (adjective) of or relating to a chorion | - |
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| chorioretinitis | (noun) inflammation of the choroid layer behind the retina | - |
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| chorister | (noun) a singer in a choir | - |
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| chorizo | (noun) a spicy Spanish pork sausage | - |
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| choroid | (noun) a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye | Synonyms: choroid coat |
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| chortle | (noun) a soft partly suppressed laugh | Synonyms: chuckle |
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| (verb) laugh quietly or with restraint | Synonyms: chuckle, laugh softly |
| chorus | (noun) the part of a song where a soloist is joined by a group of singers | Synonyms: refrain |
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| (noun) any utterance produced simultaneously by a group | - |
| (noun) a group of people assembled to sing together | - |
| (noun) a body of dancers or singers who perform together | Synonyms: chorus line |
| (noun) a company of actors who comment (by speaking or singing in unison) on the action in a classical Greek play | Synonyms: Greek chorus |
| (verb) utter in unison | - |
| (verb) sing in a choir | Synonyms: choir |
| chosen | (noun) an exclusive group of people | Synonyms: elect |
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| (noun) one who is the object of choice; who is given preference | - |
| chou | (noun) puff filled with cream or custard | Synonyms: cream puff |
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| (noun) any of various types of cabbage | Synonyms: cabbage |
| chough | (noun) a European corvine bird of small or medium size with red legs and glossy black plumage | - |
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| chouse | (verb) defeat someone through trickery or deceit | Synonyms: cheat, chicane, jockey, screw, shaft |
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| chow | (noun) breed of medium-sized dogs with a thick coat and fluffy curled tails and distinctive blue-black tongues; believed to have originated in northern China | Synonyms: chow chow |
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| (noun) informal terms for a meal | Synonyms: chuck, eats, grub |
| chowchow | (noun) a Chinese preserve of mixed fruits and ginger | - |
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| (noun) chopped pickles in mustard sauce | - |
| chowder | (noun) a thick soup or stew made with milk and bacon and onions and potatoes | - |
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| chromolithograph | (noun) a print made by chromolithography. | - |
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| chromolithography | (noun) single- or multi-color lithography | - |
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| chromophore | (noun) the chemical group that gives color to a molecule | - |
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| chthonian | (adjective) dwelling beneath the surface of the earth | Synonyms: chthonic, nether |
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| chthonic | (adjective) dwelling beneath the surface of the earth | Synonyms: chthonian, nether |
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| chuckhole | (noun) a pit or hole produced by wear or weathering (especially in a road surface) | Synonyms: pothole |
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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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| 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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| cirrhosis | (noun) a chronic disease interfering with the normal functioning of the liver; the major cause is chronic alcoholism | Synonyms: cirrhosis of the liver |
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| claustrophobe | (noun) a person suffering from claustrophobia | - |
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| claustrophobia | (noun) a morbid fear of being closed in a confined space | - |
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| claustrophobic | (adjective) suffering from claustrophobia; abnormally afraid of closed-in places | - |
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| (adjective) uncomfortably closed or hemmed in | - |
| clavichord | (noun) an early stringed instrument like a piano but with more delicate sound | - |
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| clodhopper | (noun) a thick and heavy shoe | Synonyms: brogan, brogue, work shoe |
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| clotheshorse | (noun) a framework on which to hang clothes (as for drying) | - |
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| (noun) a man who is much concerned with his dress and appearance | Synonyms: beau, dandy, dude, fashion plate, fop, gallant, sheik, swell |
| clubhouse | (noun) a building that is occupied by a social club | Synonyms: club |
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| coalhole | (noun) a bin for holding coal | Synonyms: coalbin |
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| coauthor | (noun) a writer who collaborates with others in writing something | Synonyms: joint author |
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| cockhorse | (noun) anything used as a toy horse (such as a rocking horse or one knee of an adult) | - |
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| coffeehouse | (noun) a small restaurant where drinks and snacks are sold | Synonyms: cafe, coffee bar, coffee shop |
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| coho | (noun) small salmon of northern Pacific coasts and the Great Lakes | Synonyms: blue jack, coho salmon, cohoe, Oncorhynchus kisutch, silver salmon |
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| (noun) fatty pinkish flesh of small salmon caught in the Pacific and Great Lakes | Synonyms: coho salmon, cohoe, silver salmon |
| cohoe | (noun) small salmon of northern Pacific coasts and the Great Lakes | Synonyms: blue jack, coho, coho salmon, Oncorhynchus kisutch, silver salmon |
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| (noun) fatty pinkish flesh of small salmon caught in the Pacific and Great Lakes | Synonyms: coho, coho salmon, silver salmon |
| cohort | (noun) a band of warriors (originally a unit of a Roman Legion) | - |
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| (noun) a company of companions or supporters | - |
| (noun) a group of people having approximately the same age | Synonyms: age bracket, age group |
| cohosh | (noun) a plant of the genus Actaea having acrid poisonous berries | Synonyms: baneberry, herb Christopher |
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| colophon | (noun) a publisher's emblem printed in a book (usually on the title page) | - |
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| colophony | (noun) translucent brittle substance produced from pine oleoresin; used especially in varnishes and inks and on the bows of stringed instruments | - |
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| conchoid | (noun) Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts). | - |
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| conchologist | (noun) a collector and student of mollusc shells | - |
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| conchology | (noun) the collection and study of mollusc shells | Synonyms: shell collecting |
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| conidiophore | (noun) a specialized fungal hypha that produces conidia | - |
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| cookhouse | (noun) the area for food preparation on a ship | Synonyms: caboose, galley, ship's galley |
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| (noun) a detached or outdoor shelter for cooking | - |
| coonhound | (noun) any of several breeds of hound developed for hunting raccoons | - |
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| copyhold | (noun) a medieval form of land tenure in England; a copyhold was a parcel of land granted to a peasant by the lord of the manor in return for agricultural services | - |
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| copyholder | (noun) mechanical device used in printing; holds the copy for the compositor | - |
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| corchorus | (noun) any of various plants of the genus Corchorus having large leaves and cymose clusters of yellow flowers; a source of jute | - |
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| corythosaur | (noun) duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet | Synonyms: corythosaurus |
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| corythosaurus | (noun) duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet | Synonyms: corythosaur |
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| costochondritis | (noun) inflammation at the junction of a rib and its cartilage | - |
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| countershot | (noun) a return shot; a retaliatory shot | - |
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| countinghouse | (noun) office used by the accountants of a business | - |
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| courthouse | (noun) a building that houses judicial courts | - |
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| (noun) a government building that houses the offices of a county government | - |
| cowhouse | (noun) a barn for cows | Synonyms: byre, cow barn, cowbarn, cowshed |
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| 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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| crumhorn | (noun) a Renaissance woodwind with a double reed and a curving tube (crooked horn) | Synonyms: cromorne, krummhorn |
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| cryophobia | (noun) a morbid fear of freezing | - |
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