12-letter words containing a, c, o, i
- cape comorin — a headland at the southernmost point of India, in Tamil Nadu state
- 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.
- capitol hill — the area around the Capitol in Washington, DC
- capitol peak — a mountain in W central Colorado, in the Elk range of the Rocky Mountains. 14,130 feet (4310 meters).
- capitulation — the act of capitulating
- capitulatory — the act of capitulating.
- 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.
- capricornean — born under or characteristic of Capricorn
- capricornian — a person born under the sign of Capricorn, usually between December 22nd and January 19th.
- caproic acid — oily acid found in milk
- 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.
- carbocholine — carbachol.
- carbon fiber — a very strong, lightweight synthetic fiber used in protective clothing, spacecraft components, racing shells, etc.
- carbon fibre — a black silky thread of pure carbon made by heating and stretching textile fibres and used because of its lightness and strength at high temperatures for reinforcing resins, ceramics, and metals, esp in turbine blades and for fishing rods
- carbonadoing — Present participle of carbonado.
- carbonatites — Plural form of carbonatite.
- carcinogenic — A substance that is carcinogenic is likely to cause cancer.
- cardan joint — type of universal joint
- cardioactive — of or relating to a drug or other substance affecting the function of the heart.
- cardiographs — Plural form of cardiograph.
- cardiography — electrocardiograph.
- cardiologist — A cardiologist is a doctor who specializes in the heart and its diseases.
- cardiomegaly — abnormal enlargement of the heart.
- cardiophobia — An inordinate fear of heart disease.
- cardioplegia — deliberate arrest of the action of the heart, as by hypothermia or the injection of chemicals, to enable complex heart surgery to be carried out
- carillonneur — a person who plays a carillon
- carisoprodol — a crystalline, water-soluble powder, C 12 H 24 N 2 O 4 , used as a muscle relaxant.
- carlovingian — Carolingian
- carnivourous — Misspelling of carnivorous.
- carolina bay — any of the shallow, usually marshy, oval depressions found in the coastal plains of the eastern U.S. that are heavily forested and have rich soil.
- carotid body — a small mass of cells and nerve endings adjacent to the carotid sinus that, in response to chemical changes in the blood, adjusts the respiratory rate.
- carriage dog — Dalmatian (sense 4)
- carrion crow — a common predatory and scavenging European crow, Corvus corone, similar to the rook but having a pure black bill
- carryings-on — wild, extravagant, or immoral behavior
- cartographic — Of or pertaining to the making of maps.
- cartological — relating to cartology
- cartoonishly — in a cartoonish manner
- carving fork — a large, two-tined fork with a metal guard to protect the hand, used to hold meat in place as it is being carved
- 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