| conglobation | (noun) an occurrence combining miscellaneous things into a (more or less) rounded mass | Synonyms: conglomeration |
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| (noun) a rounded spherical form | Synonyms: conglomeration |
| conglomerate | (noun) a group of diverse companies under common ownership and run as a single organization | Synonyms: empire |
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| (noun) a composite rock made up of particles of varying size | Synonyms: pudding stone |
| conglomeration | (noun) an occurrence combining miscellaneous things into a (more or less) rounded mass | Synonyms: conglobation |
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| (noun) a sum total of many heterogenous things taken together | Synonyms: aggregate, congeries |
| (noun) a rounded spherical form | Synonyms: conglobation |
| copilot | (noun) a relief pilot on an airplane | Synonyms: co-pilot |
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| cornflour | (noun) starch prepared from the grains of corn; used in cooking as a thickener | Synonyms: cornstarch |
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| cornflower | (noun) an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers | Synonyms: bachelor's button, bluebottle, Centaurea cyanus |
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| (noun) plant of southern and southeastern United States grown for its yellow flowers that can be dried | Synonyms: strawflower, Uvularia grandiflora |
| cosmetologist | (noun) an expert in the use of cosmetics | - |
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| cosmetology | (noun) the practice of beautifying the face and hair and skin | - |
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| cosmologist | (noun) an astronomer who studies the evolution and space-time relations of the universe | - |
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| cosmology | (noun) the branch of astrophysics that studies the origin and evolution and structure of the universe | Synonyms: cosmogeny, cosmogony |
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| (noun) the metaphysical study of the origin and nature of the universe | - |
| coulomb | (noun) a unit of electrical charge equal to the amount of charge transferred by a current of 1 ampere in 1 second | Synonyms: ampere-second, C |
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| councillor | (noun) a member of a council | Synonyms: council member |
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| councillorship | (noun) the position of council member | Synonyms: councilorship |
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| councilorship | (noun) the position of council member | Synonyms: councillorship |
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| counsellor | (noun) a lawyer who pleads cases in court | Synonyms: advocate, counsel, counselor-at-law, counselor, pleader |
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| (noun) someone who gives advice about problems | Synonyms: counselor |
| (noun) someone who has supervisory duties at a summer camp | Synonyms: counselor |
| counsellorship | (noun) the position of counselor | Synonyms: counselorship |
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| counselor | (noun) a lawyer who pleads cases in court | Synonyms: advocate, counsel, counsellor, counselor-at-law, pleader |
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| (noun) someone who gives advice about problems | Synonyms: counsellor |
| (noun) someone who has supervisory duties at a summer camp | Synonyms: counsellor |
| counselorship | (noun) the position of counselor | Synonyms: counsellorship |
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| counterblow | (noun) a return blow; a retaliatory blow | - |
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| counterglow | (noun) a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space | Synonyms: gegenschein |
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| counterplot | (noun) a plot intended to subvert another plot | Synonyms: counterplan |
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| craniologist | (noun) someone who claims to be able to read your character from the shape of your skull | Synonyms: phrenologist |
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| craniology | (noun) the scientific study of the skulls of various human races | - |
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| credulousness | (noun) tendency to believe too readily and therefore to be easily deceived | Synonyms: gullibility |
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| criminologist | (noun) a specialist in criminology | - |
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| criminology | (noun) the scientific study of crime and criminal behavior and law enforcement | - |
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| criollo | (noun) cocoa of superior quality | - |
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| (noun) a Spanish American of pure European stock (usually Spanish) | - |
| cryobiology | (noun) the branch of biology that studies the effects of low temperatures on living tissues or organs or organisms | - |
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| cryptologist | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptanalyst, cryptographer |
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| cryptology | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalysis, cryptanalytics, cryptography |
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| crystallogen | (noun) any chemical element that belongs to the carbon group. | Synonyms: carbon group element, Group 14 element, tetragen, tetrel |
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| crystallographer | (noun) a specialist in crystallography | - |
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| crystallography | (noun) the branch of science that studies the formation and structure of crystals | - |
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| cuckooflower | (noun) a bitter cress of Europe and America | Synonyms: Cardamine pratensis, cuckoo flower, lady's smock, meadow cress |
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| culotte | (noun) a divided skirt | - |
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| cumulonimbus | (noun) a dark cloud of great vertical extent charged with electricity; associated with thunderstorms | Synonyms: cumulonimbus cloud, thundercloud |
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| cupflower | (noun) any of various plants of the genus Nierembergia having upturned bell-shaped flowers | Synonyms: nierembergia |
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| (noun) Mexican evergreen climbing plant having large solitary funnel-shaped fragrant yellow flowers with purple-brown ridges in the throat | Synonyms: chalice vine, Solandra guttata, trumpet flower |
| cycloalkene | (noun) alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character. | Synonyms: cycloolefin |
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| cyclobenzaprine | (noun) muscle relaxant (trade name Flexeril) used for muscle spasms or acute injury | Synonyms: Flexeril |
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| cyclohexanol | (noun) a colorless oily alcohol that smells like camphor | - |
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| cycloid | (noun) a line generated by a point on a circle rolling along a straight line | - |
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| cyclone | (noun) a violent rotating windstorm | - |
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| (noun) (meteorology) rapid inward circulation of air masses about a low pressure center; circling counterclockwise in the Northern Hemisphere and clockwise in the southern | - |
| cycloolefin | (noun) alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character. | Synonyms: cycloalkene |
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| cyclooxygenase | (noun) either of two related enzymes that control the production of prostaglandins and are blocked by aspirin | Synonyms: Cox |
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| cyclopaedia | (noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty | Synonyms: cyclopedia, encyclopaedia, encyclopedia |
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| cyclopedia | (noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty | Synonyms: cyclopaedia, encyclopaedia, encyclopedia |
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| cyclopia | (noun) a developmental abnormality in which there is only one eye | - |
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| cyclopropane | (noun) a colorless flammable gas sometimes used as an inhalation anesthetic | - |
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| 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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| cyclorama | (noun) a picture (or series of pictures) representing a continuous scene | Synonyms: diorama, panorama |
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| cycloserine | (noun) an antibiotic that is especially active against the tubercle bacillus | - |
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| cyclosis | (noun) the circulation of cytoplasm within a cell | Synonyms: streaming |
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| cyclostome | (noun) primitive aquatic vertebrate | - |
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| cyclostyle | (noun) a writing implement with a small toothed wheel that cuts small holes in a stencil | - |
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| cyclothymia | (noun) a mild bipolar disorder that persists over a long time | Synonyms: cyclic disorder, cyclothymic disorder |
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| cyclotron | (noun) an accelerator that imparts energies of several million electron-volts to rapidly moving particles | - |
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| cytologist | (noun) a biologist who studies the structure and function of cells | - |
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| cytology | (noun) the branch of biology that studies the structure and function of cells | - |
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| cytomegalovirus | (noun) any of a group of herpes viruses that enlarge epithelial cells and can cause birth defects; can affect humans with impaired immunological systems | Synonyms: CMV |
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| dactylomegaly | (noun) abnormally large fingers or toes | - |
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| daktylos | (noun) a Greek unit of length equal to one centimeter. | - |
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| dalo | (noun) herb of the Pacific islands grown throughout the tropics for its edible root and in temperate areas as an ornamental for its large glossy leaves | Synonyms: Colocasia esculenta, dasheen, taro, taro plant |
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| dayflower | (noun) any plant of the family Commelinaceae | Synonyms: spiderwort |
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| deadlock | (noun) a situation in which no progress can be made or no advancement is possible | Synonyms: dead end, impasse, stalemate, standstill |
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| deathblow | (noun) the blow that kills (usually mercifully) | Synonyms: coup de grace |
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| decathlon | (noun) an athletic contest consisting of ten different events | - |
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| decolonisation | (noun) the action of changing from colonial to independent status | Synonyms: decolonization |
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| decolonization | (noun) the action of changing from colonial to independent status | Synonyms: decolonisation |
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| defloration | (noun) the act of depriving a woman of her virginity (especially by rupturing the hymen through sexual intercourse) | - |
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| (noun) an act that despoils the innocence or beauty of something | - |
| demythologisation | (noun) the restatement of a message (as a religious one) in rational terms | Synonyms: demythologization |
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| demythologization | (noun) the restatement of a message (as a religious one) in rational terms | Synonyms: demythologisation |
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| dendrology | (noun) the study of wooden plants | - |
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| deployment | (noun) the distribution of forces in preparation for battle or work | - |
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| dermatologist | (noun) a doctor who specializes in the physiology and pathology of the skin | Synonyms: skin doctor |
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| dermatology | (noun) the branch of medicine dealing with the skin and its diseases | - |
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| developer | (noun) photographic equipment consisting of a chemical solution for developing film | - |
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| (noun) someone who develops real estate (especially someone who prepares a site for residential or commercial use) | - |
| developing | (noun) processing a photosensitive material in order to make an image visible | Synonyms: development |
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| development | (noun) act of improving by expanding or enlarging or refining | - |
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| (noun) the act of making some area of land or water more profitable or productive or useful | Synonyms: exploitation |
| (noun) (music) the section of a composition or movement (especially in sonata form) where the major musical themes are developed and elaborated | - |
| (noun) a recent event that has some relevance for the present situation | - |
| (noun) a district that has been developed to serve some purpose | - |
| (noun) processing a photosensitive material in order to make an image visible | Synonyms: developing |
| (noun) (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level | Synonyms: growing, growth, maturation, ontogenesis, ontogeny |
| (noun) a process in which something passes by degrees to a different stage (especially a more advanced or mature stage) | Synonyms: evolution |
| (noun) a state in which things are improving; the result of developing (as in the early part of a game of chess) | - |
| diablotin | (noun) a thin round slice of bread usually served with soup, especially consomme. | - |
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| dialectology | (noun) the branch of philology that is devoted to the study of dialects | - |
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| dialog | (noun) the lines spoken by characters in drama or fiction | Synonyms: dialogue |
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| (noun) a conversation between two persons | Synonyms: dialogue, duologue |
| (noun) a literary composition in the form of a conversation between two people | Synonyms: dialogue |
| dialogism | (noun) the use in a text of different tones or viewpoints, whose interaction or contradiction is important to the text's interpretation. | - |
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| dialogue | (noun) the lines spoken by characters in drama or fiction | Synonyms: dialog |
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| (noun) a conversation between two persons | Synonyms: dialog, duologue |
| (noun) a literary composition in the form of a conversation between two people | Synonyms: dialog |
| (noun) a discussion intended to produce an agreement | Synonyms: negotiation, talks |
| dichloride | (noun) a compound containing two chlorine atoms per molecule | Synonyms: bichloride |
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| dichlorodiphenyltrichloroethane | (noun) an insecticide that is also toxic to animals and humans; banned in the United States since 1972 | Synonyms: DDT |
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| dichloromethane | (noun) a nonflammable liquid used as a solvent and paint remover and refrigerant | Synonyms: methylene chloride |
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| dicloxacillin | (noun) antibacterial (trade name Dynapen) used to treat staphylococcal infections that are resistant to penicillin | Synonyms: Dynapen |
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| diencephalon | (noun) the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon | Synonyms: betweenbrain, interbrain, thalmencephalon |
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| diethylmalonylurea | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, veronal |
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| diplococcus | (noun) Gram-positive bacteria usually occurring in pairs | - |
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| diplodocus | (noun) a huge quadrupedal herbivore with long neck and tail; of late Jurassic in western North America | - |
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| diploid | (noun) (genetics) an organism or cell having the normal amount of DNA per cell; i.e., two sets of chromosomes or twice the haploid number | - |
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| diploidy | (noun) the condition of being diploid | - |
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| diploma | (noun) a document certifying the successful completion of a course of study | Synonyms: sheepskin |
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| diplomacy | (noun) subtly skillful handling of a situation | Synonyms: delicacy, discreetness, finesse |
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| (noun) wisdom in the management of public affairs | Synonyms: statecraft, statesmanship |
| (noun) negotiation between nations | Synonyms: diplomatic negotiations |
| diplomat | (noun) an official engaged in international negotiations | Synonyms: diplomatist |
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| (noun) a person who deals tactfully with others | - |
| diplomate | (noun) medical specialist whose competence has been certified by a diploma granted by an appropriate professional group | - |
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| diplomatist | (noun) an official engaged in international negotiations | Synonyms: diplomat |
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| diplopia | (noun) visual impairment in which an object is seen as two objects | Synonyms: double vision |
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| diplotene | (noun) the fourth stage of the prophase of meiosis | - |
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