| accroides | (noun) an alcohol-soluble resin from Australian trees; used in varnishes and in manufacturing paper | Synonyms: acaroid resin, accaroid resin, accroides gum, accroides resin, gum accroides |
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| acroanaesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanesthesia |
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| acroanesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanaesthesia |
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| acrobat | (noun) an athlete who performs acts requiring skill and agility and coordination | - |
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| acrobatic | (adjective) vigorously active | Synonyms: athletic, gymnastic |
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| acrobatics | (noun) the gymnastic moves of an acrobat | Synonyms: tumbling |
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| (noun) the performance of stunts while in flight in an aircraft | Synonyms: aerobatics, stunt flying, stunting |
| acrocarp | (noun) a moss in which the main axis is terminated by the archegonium (and hence the capsule) | Synonyms: acrocarpous moss |
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| acrocarpous | (adjective) (of mosses) having the archegonia at the top of the stem | - |
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| acrocentric | (adjective) having a subterminal centromere | - |
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| acrocephaly | (noun) a congenital abnormality of the skull; the top of the skull assumes a cone shape | Synonyms: oxycephaly |
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| acrocyanosis | (noun) cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion | Synonyms: Raynaud's sign |
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| acrodont | (noun) an animal having teeth consolidated with the summit of the alveolar ridge without sockets | - |
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| acrogen | (noun) any flowerless plant such as a fern (pteridophyte) or moss (bryophyte) in which growth occurs only at the tip of the main stem | - |
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| acrogenic | (adjective) pertaining to flowerless plants (ferns or mosses) in which growth occurs only at the tip of the main stem | Synonyms: acrogenous |
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| acrogenous | (adjective) pertaining to flowerless plants (ferns or mosses) in which growth occurs only at the tip of the main stem | Synonyms: acrogenic |
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| acrolein | (noun) a pungent colorless unsaturated liquid aldehyde made from propene | Synonyms: propenal |
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| acromegalia | (noun) enlargement of bones of hands and feet and face; often accompanied by headache and muscle pain and emotional disturbances; caused by overproduction of growth hormone by the anterior pituitary gland (due to a tumor) | Synonyms: acromegaly |
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| acromegalic | (adjective) marked or affected by enlargement or hypertrophy of the extremities or the face | - |
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| acromegaly | (noun) enlargement of bones of hands and feet and face; often accompanied by headache and muscle pain and emotional disturbances; caused by overproduction of growth hormone by the anterior pituitary gland (due to a tumor) | Synonyms: acromegalia |
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| acromicria | (noun) abnormally small extremities (underdeveloped fingers and toes) | Synonyms: acromikria |
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| acromikria | (noun) abnormally small extremities (underdeveloped fingers and toes) | Synonyms: acromicria |
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| acromion | (noun) the outermost point of the spine of the shoulder blade | Synonyms: acromial process |
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| acromphalus | (noun) abnormal protrusion of the navel; sometimes the start of umbilical hernia | - |
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| acromyotonia | (noun) myotonia of the extremities only; causes spastic deformity of the hand or foot | - |
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| acronym | (noun) a word formed from the initial letters of the several words in the name and pronounced as one word | Synonyms: initialism |
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| acronymic | (adjective) characterized by the use of acronyms | Synonyms: acronymous |
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| acronymous | (adjective) characterized by the use of acronyms | Synonyms: acronymic |
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| acropetal | (adjective) of leaves or flowers; developing or opening in succession from base to apex | - |
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| acrophobia | (noun) a morbid fear of great heights | - |
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| acrophobic | (adjective) suffering from acrophobia; abnormally afraid of high places | - |
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| acrophony | (noun) naming a letter of the alphabet by using a word whose initial sound is the sound represented by that letter | - |
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| acropolis | (noun) the citadel in ancient Greek towns | - |
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| acroscopic | (adjective) facing or on the side toward the apex | - |
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| acrosome | (noun) a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg | - |
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| across | (adverb) transversely | Synonyms: crossways, crosswise |
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| (adverb) to the opposite side | - |
| acrostic | (noun) a puzzle where you fill a square grid with words reading the same down as across | Synonyms: word square |
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| (noun) verse in which certain letters such as the first in each line form a word or message | - |
| antimicrobial | (adjective) capable of destroying or inhibiting the growth of disease-causing microorganisms | Synonyms: antimicrobic |
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| (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobic, disinfectant, germicide |
| antimicrobic | (adjective) capable of destroying or inhibiting the growth of disease-causing microorganisms | Synonyms: antimicrobial |
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| (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobial, disinfectant, germicide |
| backcross | (verb) mate a hybrid of the first generation with one of its parents | - |
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| cancroid | (adjective) of or relating to a cancroid | - |
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| (noun) the most common form of skin cancer | Synonyms: squamous cell carcinoma |
| cecropia | (noun) North American silkworm moth; larvae feed on the leaves of forest trees | Synonyms: cecropia moth, Hyalophora cecropia |
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| chancroid | (noun) infectious venereal ulcer | - |
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| chancroidal | (adjective) of or relating to or having chancroids | - |
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| chancrous | (adjective) of or having chancres | - |
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| chylomicron | (noun) a microscopic particle of triglycerides produced in the intestines during digestion; in the bloodstream they release their fatty acids into the blood | - |
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| cockcrow | (noun) the first light of day | Synonyms: aurora, break of day, break of the day, dawn, dawning, daybreak, dayspring, first light, morning, sunrise, sunup |
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| colicroot | (noun) any of several perennials of the genus Aletris having grasslike leaves and bitter roots reputed to cure colic | Synonyms: colic root, crow corn, star grass, unicorn root |
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| crisscross | (adjective) marked with crossing lines | Synonyms: crisscrossed |
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| (noun) a marking that consists of lines that cross each other | Synonyms: cross, mark |
| (adverb) crossing one another in opposite directions | - |
| (verb) mark with a pattern of crossing lines | - |
| (verb) mark with or consist of a pattern of crossed lines | - |
| (verb) cross in a pattern, often random | - |
| crisscrossed | (adjective) marked with crossing lines | Synonyms: crisscross |
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| croak | (noun) a harsh hoarse utterance (as of a frog) | Synonyms: croaking |
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| (verb) pass from physical life and lose all bodily attributes and functions necessary to sustain life | Synonyms: buy the farm, cash in one's chips, choke, conk, decease, die, drop dead, exit, expire, give-up the ghost, go, kick the bucket, pass, pass away, perish, pop off, snuff it |
| (verb) make complaining remarks or noises under one's breath | Synonyms: gnarl, grumble, murmur, mutter |
| (verb) utter a hoarse sound, like a raven | Synonyms: cronk |
| croaker | (noun) any of several fishes that make a croaking noise | - |
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| (noun) the lean flesh of a saltwater fish caught along Atlantic coast of southern U.S. | - |
| croaking | (noun) a harsh hoarse utterance (as of a frog) | Synonyms: croak |
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| croaky | (adjective) like the sounds of frogs and crows | Synonyms: guttural |
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| crochet | (noun) needlework done by interlocking looped stitches with a hooked needle | Synonyms: crocheting |
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| (verb) make a piece of needlework by interlocking and looping thread with a hooked needle | Synonyms: hook |
| (verb) create by looping or crocheting | - |
| crocheting | (noun) creating a garment of needlework | - |
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| (noun) needlework done by interlocking looped stitches with a hooked needle | Synonyms: crochet |
| crock | (noun) an earthen jar (made of baked clay) | Synonyms: earthenware jar |
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| (noun) nonsense; foolish talk | - |
| (noun) a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink | Synonyms: carbon black, lampblack, smut, soot |
| (verb) soil with or as with crock | - |
| (verb) release color when rubbed, of badly dyed fabric | - |
| crocked | (adjective) very drunk | Synonyms: besotted, blind drunk, blotto, cockeyed, fuddled, loaded, pie-eyed, pissed, pixilated, plastered, slopped, sloshed, smashed, soaked, soused, sozzled, squiffy, stiff, tight, wet |
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| crockery | (noun) tableware (eating and serving dishes) collectively | Synonyms: dishware |
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| crocket | (noun) an architectural ornament of curved foliage used at the edge of a spire or gable | - |
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| crocketed | (adjective) (of a gable or spire) furnished with a crocket (an ornament in the form of curved or bent foliage) | - |
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| crocodile | (noun) large voracious aquatic reptile having a long snout with massive jaws and sharp teeth and a body covered with bony plates; of sluggish tropical waters | - |
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| crocodilian | (noun) extant archosaurian reptile | Synonyms: crocodilian reptile |
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| crocolite | (noun) a rare lead chromite mineral that forms bright orange crystals | - |
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| crocus | (noun) any of numerous low-growing plants of the genus Crocus having slender grasslike leaves and white or yellow or purple flowers; native chiefly to the Mediterranean region but widely cultivated | - |
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| croft | (noun) a small farm worked by a crofter | - |
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| crofter | (noun) an owner or tenant of a small farm in Great Britain | - |
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| croissant | (noun) very rich flaky crescent-shaped roll | Synonyms: crescent roll |
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| cromlech | (noun) a prehistoric megalithic tomb typically having two large upright stones and a capstone | Synonyms: dolmen, portal tomb |
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| cromorne | (noun) a Renaissance woodwind with a double reed and a curving tube (crooked horn) | Synonyms: crumhorn, krummhorn |
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| cromulent | (adjective) Legitimate or valid (frequently used ironically) | - |
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| crone | (noun) an ugly evil-looking old woman | Synonyms: beldam, beldame, hag, witch |
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| cronk | (verb) utter a hoarse sound, like a raven | Synonyms: croak |
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| (verb) cry like a goose | Synonyms: honk |
| crony | (noun) a close friend who accompanies his buddies in their activities | Synonyms: brother, buddy, chum, pal, sidekick |
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| cronyism | (noun) favoritism shown to friends and associates (as by appointing them to positions without regard for their qualifications) | - |
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| crook | (noun) a long staff with one end being hook shaped | Synonyms: shepherd's crook |
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| (noun) someone who has committed a crime or has been legally convicted of a crime | Synonyms: criminal, felon, malefactor, outlaw |
| (noun) a circular segment of a curve | Synonyms: bend, turn, twist |
| (verb) bend or cause to bend | Synonyms: curve |
| crookback | (adjective) characteristic of or suffering from kyphosis, an abnormality of the vertebral column | Synonyms: crookbacked, gibbous, humpbacked, humped, hunchbacked, kyphotic |
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| (noun) a person whose back is hunched because of abnormal curvature of the upper spine | Synonyms: humpback, hunchback |
| crookbacked | (adjective) characteristic of or suffering from kyphosis, an abnormality of the vertebral column | Synonyms: crookback, gibbous, humpbacked, humped, hunchbacked, kyphotic |
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| crooked | (adjective) having or marked by bends or angles; not straight or aligned | - |
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| (adjective) not straight; dishonest or immoral or evasive | Synonyms: corrupt |
| (adjective) irregular in shape or outline | Synonyms: asymmetrical |
| (adjective) having the back and shoulders rounded; not erect | Synonyms: hunched, round-backed, round-shouldered, stooped, stooping |
| crookedly | (adverb) in a crooked lopsided manner | Synonyms: lopsidedly |
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| crookedness | (noun) having or distinguished by crooks or curves or bends or angles | - |
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| (noun) the quality of being deceitful and underhanded | Synonyms: deviousness |
| (noun) a tortuous and twisted shape or position | Synonyms: contortion, torsion, tortuosity, tortuousness |
| crookneck | (noun) yellow squash with a thin curved neck and somewhat warty skin | Synonyms: crookneck squash, summer crookneck |
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| croon | (verb) sing softly | - |
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| crooner | (noun) a singer of popular ballads | Synonyms: balladeer |
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| crooning | (noun) the act of singing popular songs in a sentimental manner | - |
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| (noun) singing in a soft low tone | - |
| crop | (noun) a pouch in many birds and some lower animals that resembles a stomach for storage and preliminary maceration of food | Synonyms: craw |
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| (noun) the stock or handle of a whip | - |
| (noun) the output of something in a season | - |
| (noun) a collection of people or things appearing together | - |
| (noun) the yield from plants in a single growing season | Synonyms: harvest |
| (noun) a cultivated plant that is grown commercially on a large scale | - |
| (verb) cultivate, tend, and cut back the growth of | Synonyms: clip, cut back, dress, lop, prune, snip, trim |
| (verb) feed as in a meadow or pasture | Synonyms: browse, graze, pasture, range |
| (verb) cut short | - |
| (verb) let feed in a field or pasture or meadow | Synonyms: graze, pasture |
| (verb) yield crops | - |
| (verb) prepare for crops | Synonyms: cultivate, work |
| cropped | (adjective) (of land or soil) used for growing crops | - |
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| cropper | (noun) small farmers and tenants | Synonyms: sharecrop farmer, sharecropper |
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| croquet | (noun) a game in which players hit a wooden ball through a series of hoops; the winner is the first to traverse all the hoops and hit a peg | - |
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| (verb) play a game in which players hit a wooden ball through a series of hoops | - |
| (verb) drive away by hitting with one's ball | - |
| croquette | (noun) minced cooked meats (or vegetables) in thick white sauce; breaded and deep-fried | - |
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| crore | (noun) the number that is represented as a one followed by 7 zeros; ten million | - |
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| crosier | (noun) a staff surmounted by a crook or cross carried by bishops as a symbol of pastoral office | Synonyms: crozier |
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| cross | (adjective) extending or lying across; in a crosswise direction; at right angles to the long axis | Synonyms: thwartwise, transversal, transverse |
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| (adjective) annoyed and irritable | Synonyms: bad-tempered, crabbed, crabby, fussy, grouchy, grumpy, ill-tempered |
| (noun) (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | Synonyms: crossbreeding, crossing, hybridisation, hybridization, hybridizing, interbreeding |
| (noun) (genetics) an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species | Synonyms: crossbreed, hybrid |
| (noun) a wooden structure consisting of an upright post with a transverse piece | - |
| (noun) a marking that consists of lines that cross each other | Synonyms: crisscross, mark |
| (noun) any affliction that causes great suffering | Synonyms: crown of thorns |
| (verb) breed animals or plants using parents of different races and varieties | Synonyms: crossbreed, hybridise, hybridize, interbreed |
| (verb) trace a line through or across | - |
| (verb) travel across or pass over | Synonyms: cover, cut across, cut through, get across, get over, pass over, track, traverse |
| (verb) meet and pass | - |
| (verb) meet at a point | Synonyms: intersect |
| (verb) fold so as to resemble a cross | - |
| (verb) hinder or prevent (the efforts, plans, or desires) of | Synonyms: baffle, bilk, foil, frustrate, queer, scotch, spoil, thwart |
| (verb) to cover or extend over an area or time period | Synonyms: span, sweep, traverse |
| crossbar | (noun) long thin horizontal crosspiece between two vertical posts | - |
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| (noun) game equipment consisting of a horizontal bar to be jumped or vaulted over | - |
| (noun) a horizontal bar that goes across something | - |
| crossbeam | (noun) a horizontal beam that extends across something | Synonyms: crosspiece, trave, traverse |
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| crossbench | (noun) any of the seats in the House of Commons used by members who do not vote regularly with either the government or the Opposition | - |
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| crossbencher | (noun) a member of the House of Commons who does not vote regularly with either the government or the Opposition | - |
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| crossbill | (noun) finch with a bill whose tips cross when closed | Synonyms: Loxia curvirostra |
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| crossbones | (noun) two crossed bones (or a representation of two crossed bones) used as a symbol danger or death | - |
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| crossbow | (noun) a bow fixed transversely on a wooden stock grooved to direct the arrow (quarrel) | - |
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| crossbred | (adjective) bred from parents of different varieties or species | - |
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