12-letter words containing a, c, o, u
- cheluviation — the leaching of chelates through soil
- chequerboard — Alternative spelling of checkerboard.
- chestnut oak — any of several North American oaks, as Quercus prinus, having serrate or dentate leaves resembling those of the chestnut.
- child labour — the full-time employment of children below a minimum age laid down by statute
- chincoteague — a town on a small island in a lagoon (Chincoteague Bay) in E Virginia: annual wild pony roundup.
- chinhuangtao — a seaport in NE Hebei province, in NE China, on the Bohai.
- chivalrously — having the qualities of chivalry, as courage, courtesy, and loyalty.
- chlorambucil — an alkylating drug derived from nitrogen mustard, administered orally in the treatment of leukaemia and other malignant diseases. Formula: C14H19Cl2NO2
- chorus pedal — an electronic device that creates the effect of more than one sound from a single source by combining a short delay with slight deviations in pitch
- chorusmaster — the conductor of a choir
- chota nagpur — a plateau in E India, mainly in Jharkhand state since 2000: forested, with rich mineral resources and much heavy industry; produces chiefly lac (world's leading supplier), coal (half India's total output), and mica
- choux pastry — a very light pastry made with eggs, used for eclairs, etc
- chuck off at — to abuse or make fun of
- chukot range — mountain range in NE Siberia: highest peak, c. 7,500 ft (2,286 m)
- chylocaulous — having fleshy stems.
- cichoraceous — relating to plants of the sub-order Cichoraceae
- cinnamon bun — a honey bun flavored with cinnamon and often containing raisins.
- circulations — Plural form of circulation.
- circumboreal — of or having to do with plants and animals inhabiting boreal regions of North America and Eurasia
- circumocular — surrounding the eye.
- circumrotary — Alternative form of circumrotatory.
- circumrotate — to turn like a wheel; rotate
- cirrostratus — a uniform layer of cloud above about 6000 metres (20 000 feet)
- ciudad ojeda — a city in NW Venezuela, on Lake Maracaibo.
- cladocarpous — pleurocarpous.
- cladosporium — any of the species of fungi in the genus Cladosporium
- clamourously — Archaic spelling of clamorously.
- clangorously — In a clangorous manner; ringingly.
- claude monet — Claude [klawd;; French klohd] /klɔd;; French kloʊd/ (Show IPA), 1840–1926, French painter.
- claudication — limping; lameness
- claustration — the act of confining to a small space (usually a cloister)
- close-hauled — with the sails flat, so as to sail as close to the wind as possible
- cloud banner — banner cloud.
- cloud-capped — having clouds around the top
- coachbuilder — (historical) A builder of horse-drawn coaches.
- coal scuttle — A coal scuttle is a container for keeping coal in.
- coal-burning — fuelled by burning coal
- cocaine bust — an arrest for the possession of cocaine
- cocoa butter — a yellowish-white waxy solid that is obtained from cocoa beans and used for confectionery, soap, etc
- coconut crab — a large, terrestrial crab, Birgus latro, of islands in the South Pacific, that feeds on coconuts.
- coconut palm — A coconut palm is a tall tree on which coconuts grow.
- cocurricular — of or relating to a joint curriculum
- colliquation — liquefaction
- colliquative — capable of liquefaction or dissolution
- colloquially — characteristic of or appropriate to ordinary or familiar conversation rather than formal speech or writing; informal.
- colluctation — a struggle or conflict
- coloquintida — colocynth (defs 1, 2).
- colour chart — a chart with samples of paint colours
- colour guard — a military guard in a parade, ceremony, etc, that carries and escorts the flag or regimental colours
- colour phase — a seasonal change in the coloration of some animals