12-letter words containing a, r, i, o, s
- burkina faso — an inland republic in W Africa: dominated by Mossi kingdoms (10th–19th centuries); French protectorate established in 1896; became an independent republic in 1960; consists mainly of a flat savanna plateau. Official language: French; Mossi and other African languages also widely spoken. Religion: mostly animist, with a large Muslim minority. Currency: franc. Capital: Ouagadougou. Pop: 17 812 961 (2013 est). Area: 273 200 sq km (105 900 sq miles)
- burro's tail — a succulent Mexican plant, Sedum morganianum, of the stonecrop family, bearing small, rose-colored flowers and long, hanging, nearly cylindrical stems with closely packed whitish-green leaves.
- byelorussian — Byelorussian means belonging or relating to Byelorussia or to its people or culture.
- bypass ratio — the ratio of the amount of air that bypasses the combustion chambers of an aircraft gas turbine to that passing through them
- cabot strait — a channel in Canada, connecting the Gulf of St. Lawrence with the Atlantic Ocean. 68 miles (109 km) wide.
- calibrations — Plural form of calibration.
- calorimeters — Plural form of calorimeter.
- calumniators — Plural form of calumniator.
- canine corps — a military or law enforcement body which uses dogs for the detection of explosives or drugs or for security, tracking, etc
- caparisoning — Present participle of caparison.
- 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.
- 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.
- cataphoresis — electrophoresis
- catastrophic — Something that is catastrophic involves or causes a sudden terrible disaster.
- categorising — to arrange in categories or classes; classify.
- cater-cousin — a close friend
- cauliflowers — Plural form of cauliflower.
- celebrations — Plural form of celebration.
- centimorgans — Plural form of centimorgan.
- ceratopsians — Plural form of ceratopsian.
- cerebrations — Plural form of cerebration.
- ceroplastics — the art of wax modelling
- chaetiferous — having bristles
- chain smoker — person: smokes heavily
- chain-smoker — A chain-smoker is a person who chain-smokes.
- chairpersons — Plural form of chairperson.
- charity shop — A charity shop is a shop that sells used goods cheaply and gives its profits to a charity.
- charity toss — a free shot given as a penalty for a foul
- chicharrones — A Hispanic dish; made of fried pork rinds.
- chiropterans — Plural form of chiropteran.
- chivalrously — having the qualities of chivalry, as courage, courtesy, and loyalty.
- chocolatiers — Plural form of chocolatier.
- choirmasters — Plural form of choirmaster.
- chondrostian — relating to the class Chondrostei of fish with fin rays
- christophany — an appearance or emergence of Christ following his crucifixion
- chromaticism — the use of chromatic tones.
- chromatopsia — an irregularity in the ability to see colours properly
- cichoraceous — relating to plants of the sub-order Cichoraceae
- circulations — Plural form of circulation.
- cirrostratus — a uniform layer of cloud above about 6000 metres (20 000 feet)
- cladosporium — any of the species of fungi in the genus Cladosporium
- claims ratio — The claims ratio is the percentage of claims costs incurred in relation to the premiums earned.