Showing 701 to 800 of 3,132.
- CONCHOIDAny 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 distanc
- CONDYLEA smooth prominence on a bone where it forms a joint with another bone.
- CONDYLOMAA wartlike growth on the skin or a mucous membrane, caused by certain types of HPV viruses, usually occurring in the genital area.
- CONEA surface of revolution formed by rotating a segment of a line around another line that intersects the first line.
- CONICSynonym of conical.
- CONIDIUMA fungal spore produced asexually in a conidiophore.
- CONIOSISAny disease caused by the inhalation of dust.
- CONUREAny of many New World parakeets of the former genus Conurus, now reassigned to other genera in subfamily Arinae, principally Psittacara and Eupsittula.
- COPPERA reddish-brown metallic chemical element (symbol Cu) with the atomic number 29; also, the metal made up of this element.
- COQUINAAny of several small marine clams, of the species Donax variabilis, common in United States coastal waters.
- CORALAny of many species of marine invertebrates in the class Anthozoa, most of which build hard calcium carbonate skeletons and form colonies, or a colony belonging to one of those spe
- CORBANAn offering to God, especially in fulfilment of a vow.
- COREOPSISAny of several composite herbs, of genus Coreopsis, typically with bright yellow flowers.
- CORIANDERThe annual herb Coriandrum sativum, used in many cuisines.
- CORMA short, vertical, swollen, underground stem of a plant (usually one of the monocots) that serves as a storage organ to enable the plant to survive winter or other adverse conditio
- CORMOPHYTEAny plant having a proper stem or axis of growth, which is distinct from its leaves, phyllophyte
- CORMUSA corm.
- CORNICEA horizontal architectural element of a building, projecting forward from the main walls, originally used as a means of directing rainwater away from the building's walls.
- CORONETA small crown, such as is worn by a noble.
- CORONISA device, curved stroke, or flourish formed with a pen, coming at the end of a book or chapter; a colophon. For example: ⸎, ۞.
- CORYMBA cluster of flowers with a flat or convex top.
- CORYNEFORMAny bacterium of the genus Corynebacterium
- CORYPHENEA fish of the genus Coryphaena.
- CORYZAInflammation of the mucous membranes lining the nasal cavity, usually causing a running nose, nasal congestion and loss of smell.
- COSMOGRAPHYThe creation of maps of the universe.
- COSMONAUTAn astronaut, especially a Russian or Soviet one.
- COSTMARYAn aromatic plant (Tanacetum balsamita), once used to flavour ale (prior to use of hops); also used as a bookmark in Bibles and other holy texts to dissuade silverfish and other pe
- COTHURNA buskin anciently worn by tragic actors on the stage.
- COTHURNUSA buskin used in ancient tragedy.
- COTYLEAlternative form of kotyle (“cantharus, a kind of ancient Greek and Roman cup”).
- COTYLEDONEach of the patches of villi on the foetal chorion in the placenta of ruminants and some other mammals.
- COXALGYDated form of coxalgia.
- CRANESBILLAny flowering plant of the genus Geranium found throughout the temperate zone.
- CRANIUMThat part of the skull consisting of the bones enclosing the brain, but not including the bones of the face or jaw.
- CRAPULOUSCharacterized by excessive eating or drinking.
- CRATERA hemispherical pit created by the impact of a meteorite or other object.
- CRATONA part of the Earth’s crust that has survived the splitting and merging of continents.
- CREATICRelating to, or produced by, meat.
- CREATINEAn amino acid, 2-(carbamimidoyl-methyl- amino)acetic acid, which naturally occurs in vertebrates and helps to supply energy to muscle and nerve cells.
- CREATININEA heterocyclic amine, 2-amino-1-methyl-5H-imidazol-4-one, formed by the metabolism of creatine.
- CREMASTERA thin muscle attached to the testicles.
- CREOSOTEA pale yellow oily liquid, containing phenols and similar compounds, obtained by the destructive distillation of wood tar, once used medicinally.
- CRINOIDOne of the numerous animals that make up the class Crinoidea; the feather stars or sea lilies.
- CRINUMAny of the genus Crinum of perennial plants with large showy flowers on leafless stems, which develop from bulbs.
- CRISISA crucial or decisive point or situation; a turning point.
- CRITERIAplural of criterion
- CRITERIONA standard, test, or requirement by which individual things or people may be compared and judged; a gauge.
- CRITERIUMA mass-start road-cycle race consisting of several laps around a closed circuit, the length of each lap or circuit ranging from about 1 km to 2 km (1/2 mile to just over 1 mile).
- CRITHthe weight of 1 litre of hydrogen at standard temperature and pressure. Equal to approximately 0.09 grams.
- CRITICA person who appraises the works of others.
- CROCUSA perennial flowering plant (of the genus Crocus in the Iridaceae family). Saffron is obtained from the stamens of Crocus sativus.
- CRONYA close friend.
- CROTALA crotalum, a type of clapper used in Ancient Greece.
- CROTALAplural of crotalum
- CROTONAny of various plants, of the genus Croton, that yield croton oil.
- CROWNA royal, imperial or princely headdress; a diadem.
- CRYPTA cave or cavern.
- CRYPTOGAMAny plant that reproduces using spores (rather than seeds), formerly placed in the taxonomic group Cryptogamae, which included ferns, mosses, algae, fungi, lichens and liverworts.
- CRYSTALLINEOf, relating to, or composed of crystals.
- CTENEA band of fused cilia on the bodies of ctenophores, used for locomotion.
- CTENIFORMComb-shaped.
- CUBEA regular polyhedron having six identical square faces.
- CUBISMAn artistic movement in the early 20th Century characterized by the depiction of natural forms as geometric structures of planes.
- CUMINThe flowering plant Cuminum cyminum, in the family Apiaceae.
- CURTAINA piece of cloth covering a window, bed, etc. to offer privacy and keep out light.
- CYANAn additive secondary colour midway between green and blue, evoked by wavelengths between ~490 and ~520 nm.
- CYATHIFORMIn the form of a cup, a little widened at the top.
- CYATHUSAn ancient Roman unit of liquid measure reckoned as the volume of 1⅔ Roman ounce of wine and equivalent to about 45 mL although differing slightly over time.
- CYESISPregnancy.
- CYGNETThe young of a swan.
- CYLINDERA surface created by projecting a closed two-dimensional curve along an axis intersecting the plane of the curve.
- CYMAThe wavelike, curved shape of a cymatium, consisting of a concave and a convex line; the cymatium itself.
- CYMATIUMA molding on the cornice, above the corona, often having a wavelike form (cyma).
- CYMBALA concave plate of metal, usually brass or bronze, that produces a sharp, ringing sound when struck: played either in pairs, by striking them together, or singly by striking with a
- CYMBALERSA concave plate of metal, usually brass or bronze, that produces a sharp, ringing sound when struck: played either in pairs, by striking them together, or singly by striking with a
- CYMENEAny of several isomeric naturally occurring terpenoid hydrocarbons; a constituent of a number of essential oils, most commonly the oil of cumin and thyme.
- CYNICA person whose outlook is scornfully negative.
- CYNODONTAny of several small carnivorous synapsids in the clade Cynodontia, ancestral to mammals and extinct close relatives.
- CYNOMOLGUSA long-tailed macaque (Macaca fascicularis), native to Asia, that feeds on shellfish.
- CYNOSUREAlternative letter-case form of Cynosure: Ursa Minor or Polaris, the North Star, used as a guide by navigators.
- CYSTA pouch or sac without opening, usually membranous and containing morbid matter, which develops in one of the natural cavities or in the substance of an organ.
- CYSTICOf or pertaining to a cyst.
- CYSTINEA nonessential amino acid formed by the oxidation of cysteine; it contains two cysteine residues linked by a disulfide bond.
- CYTESynonym of cell (“quantity of protoplasm, containing a nucleus, enclosed within a cell membrane”).
- CYTODEA nonnucleated mass of protoplasm, the supposed simplest form of independent life, differing from the amoeba, in which nuclei are present
- CYTOIDcell-like; applied to the corpuscles of lymph, blood, chyle, etc.
- CYTOKINEAny of various small regulatory proteins that regulate the cells of the immune system.
- CYTOSINEA heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds).
- DACTYLA metrical foot of three syllables of the shape | – ⏖ |:
- DAEMONA minor deity or divinity.
- DAFTARA record or register consisting of a set of loose sheets filed on a string or tied up in a cloth.
- DAGGERA stabbing weapon, similar to a sword but with a short, double-edged blade.
- DAIMONSynonym of demon, particularly as A tutelary deity or spirit that watches over a person or place.
- DAIMONICIn the way of a daimon; befitting a demon; fiendish.
- DAISA raised platform in a room for a high table, a seat of honour, a throne, or other dignified occupancy, such as ancestral statues; a similar platform supporting a lectern, pulpit,
- DAPHNEAny one of least 50 species of shrub in the genus Daphne of the family Thymelaeaceae, some of which are grown as ornamentals.
- DARICA gold coin from Persian Empire, introduced by Darius the Great (522-486 BC) and used until Alexander the Great's invasion (330 BC).
- DASYMETERAn instrument for testing the density of gases, consisting of a thin glass globe, which is weighed in the gas or gases, and then in an atmosphere of known density.
- DASYUREAny of various Australasian carnivorous marsupials, of the family Dasyuridae, which include the marsupial equivalent to cats
- DATEThe fruit of the date palm, Phoenix dactylifera, somewhat in the shape of an olive, containing a soft, sweet pulp and enclosing a hard kernel.