12-letter words containing o, n, t, a
- china closet — a cabinet or cupboard for storing or exhibiting chinaware.
- 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.
- chiropterans — Plural form of chiropteran.
- chlorinating — Present participle of chlorinate.
- chlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
- chloroethane — ethyl chloride.
- chondroblast — a type of cell that develops into a chondrocyte or cartilage cell
- chondrostian — relating to the class Chondrostei of fish with fin rays
- 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
- christophany — an appearance or emergence of Christ following his crucifixion
- chromonemata — a chromosome thread that is relatively uncoiled at early prophase but assumes a spiral form at metaphase.
- chthonophagy — (disease) Alternative form of chthonophagia.
- chukot range — mountain range in NE Siberia: highest peak, c. 7,500 ft (2,286 m)
- circulations — Plural form of circulation.
- city company — (in Britain) a corporation that represents one of the historic trade guilds of London
- civilisation — Alternative spelling of civilization.
- civilization — Civilization is the state of having an advanced level of social organization and a comfortable way of life.
- cladogenetic — relating to cladogenesis
- clairvoyants — Plural form of clairvoyant.
- clara barton — Clara, 1821–1912, U.S. philanthropist who organized the American Red Cross in 1881.
- class action — A class action is a legal case brought by a group of people rather than an individual.
- 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)
- clayton fern — a tall fern, Osmunda claytoniana, of eastern North America and eastern Asia, having an interruption of growth in the center of some fronds.
- cleptomaniac — kleptomania.
- closing date — The closing date for a competition or offer is the final date by which entries or applications must be received.
- co-ordinator — a person or thing that coordinates.
- co-parenting — a divorced or separated parent who shares equally with the other parent in the custody and care of a child.
- coacervation — a reversible, emulsoid stage existing between the sol and gel formations, in which the addition of a third substance causes the separation of the sol into two immiscible liquid phases: an essential stage in the formation of proteins, antibodies, etc.
- coactivation — Activation of two or more things together.
- coadaptation — the state of two or more things adapting to one another
- coalitionism — the principle of governing by coalition
- coalitionist — An advocate of coalition or a partner in a coalition.
- coast ranges — series of mountain ranges along the W coast of North America, extending from Alas. to Baja California: highest peak, Mt. Logan
- coat protein — any protein that is a constituent of the capsid of a virus.
- cobalt green — a medium, yellowish-green color.
- cobaltammine — any of the various complex derivatives of cobalt containing one or more molecules of ammonia bonded to the cobalt.
- cocaine bust — an arrest for the possession of cocaine
- 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.
- codefendants — Plural form of codefendant.
- codification — the systematic organization of methods, rules, etc
- coelacanthic — of or relating to the coelacanth
- coelenterata — the phylum comprising the coelenterates.
- coelenterate — any invertebrate of the phylum Cnidaria (formerly Coelenterata), having a saclike body with a single opening (mouth), which occurs in polyp and medusa forms. Coelenterates include the hydra, jellyfishes, sea anemones, and corals
- coenesthesia — general awareness of one's own body
- cogeneration — the process of generating electricity and steam from the same power plant
- cogenerators — Plural form of cogenerator.