12-letter words containing o, s, i
- calibrations — Plural form of calibration.
- caliginosity — darkness
- calorimeters — Plural form of calorimeter.
- calumniators — Plural form of calumniator.
- calumniously — in a calumnious manner
- calycoideous — calycoid
- camp bastion — a large British military base in Helmand province, Afghanistan, built in 2006
- canalisation — The conversion of a river or other waterway to a canal.
- canine corps — a military or law enforcement body which uses dogs for the detection of explosives or drugs or for security, tracking, etc
- cannabinoids — Plural form of cannabinoid.
- canonicalise — (transitive, computing, UK) Alternative form of canonicalize.
- canonisation — Alternative spelling of canonization.
- caparisoning — Present participle of caparison.
- cape sounion — Cape, a cape in E central Greece, SE of Athens, at the tip of the Attica peninsula, in W Aegean Sea.
- capillaceous — having numerous filaments resembling hairs or threads
- capital cost — a cost incurred on the purchase of land, buildings, construction and equipment to be used in the production of goods or the rendering of services
- capital loss — A capital loss is a loss on investment property.
- capriciously — subject to, led by, or indicative of a sudden, odd notion or unpredictable change; erratic: He's such a capricious boss I never know how he'll react.
- capsaicinoid — (organic chemistry) Any of a class of irritant compounds, related to capsaicin, that are responsible for the heat of chilli peppers.
- captiousness — The state of being captious.
- carbocations — Plural form of carbocation.
- carbonatites — Plural form of carbonatite.
- cardiographs — Plural form of cardiograph.
- cardiologist — A cardiologist is a doctor who specializes in the heart and its diseases.
- carisoprodol — a crystalline, water-soluble powder, C 12 H 24 N 2 O 4 , used as a muscle relaxant.
- carnivourous — Misspelling of carnivorous.
- carryings-on — wild, extravagant, or immoral behavior
- cartoonishly — in a cartoonish manner
- case history — A person's case history is the record of past events or problems that have affected them, especially their medical history.
- cassiopeia a — a very strong radio and X-ray source in the constellation Cassiopeia, identified as the remnant of a supernova thought to have occurred in the late 17th century
- castellation — Architecture. built like a castle, especially with turrets and battlements.
- castigations — Plural form of castigation.
- castile soap — a hard soap made from olive oil and sodium hydroxide
- casting vote — When a committee has given an equal number of votes for and against a proposal, the chairperson can give a casting vote. This vote decides whether or not the proposal will be passed.
- catacoustics — the branch of acoustics dealing with echoes and reflected sounds
- cataphoresis — electrophoresis
- catastrophic — Something that is catastrophic involves or causes a sudden terrible disaster.
- catch points — railway points designed to derail a train running back in the wrong direction to prevent collision with a following train
- categorising — to arrange in categories or classes; classify.
- cater-cousin — a close friend
- cauliflowers — Plural form of cauliflower.
- causationism — the theory of universal causation
- causationist — a person who believes in the theory of universal causation
- caustic soda — Caustic soda is a powerful chemical substance used to make strong soaps and clean drains.
- cautiousness — showing, using, or characterized by caution: a cautious man; To be cautious is often to show wisdom.
- cavaco silva — Aníbal (aˈnibal). born 1939, Portuguese statesman; prime minister (1985–95); president (2006–16)
- cecil rhodes — Cecil John, 1853–1902, English colonial capitalist and government administrator in southern Africa.
- ceiling rose — decorative plaster centrepiece
- celebrations — Plural form of celebration.
- celtic cross — a Latin cross with a broad ring surrounding the point of intersection