15-letter words containing r, o, s
- bullock's heart — the large, edible fruit of a tropical American tree, Annona reticulata.
- bullock's-heart — the large, edible fruit of a tropical American tree, Annona reticulata.
- bureau of mines — a division of the Department of the Interior, created in 1910, that studies the nation's mineral resources and inspects mines.
- business person — Business people are people who work in business.
- butcher's-broom — a liliaceous evergreen shrub, Ruscus aculeatus, that has stiff prickle-tipped flattened green stems, which resemble and function as true leaves. The plant was formerly used for making brooms
- button mushroom — Button mushrooms are small mushrooms used in cooking.
- caernarvonshire — (until 1974) a county of NW Wales, now part of Gwynedd
- cairngorm-stone — smoky quartz.
- calcareous clay — soil with high limestone content
- calcareous tufa — tufa
- california rose — a cultivated variety of a bindweed, Calystegia hederacea, having showy, double, rose-colored flowers.
- camp counsellor — an adult supervisor assigned to a group of campers at a summer camp
- canadian forces — the official name for the military forces of Canada
- canisterization — the process of putting (something) into a canister or canisters
- cape gooseberry — a tropical American solanaceous plant, Physalis peruviana, naturalized in southern Africa, having yellow flowers and edible yellow berries
- caprifoliaceous — of, relating to, or belonging to the Caprifoliaceae, a family of N temperate shrubs, small trees, and climbers including honeysuckle, elder, and guelder-rose
- car transporter — a vehicle for carrying automobiles
- carcinosarcomas — Plural form of carcinosarcoma.
- cardinal points — the four main points of the compass: north, south, east, and west
- cardinal vowels — a set of theoretical vowel sounds, based on the shape of the mouth needed to articulate them, that can be used to classify the vowel sounds of any speaker in any language
- careers officer — a person trained in giving vocational advice, esp to school leavers
- carnivorousness — flesh-eating: A dog is a carnivorous animal.
- carpometacarpus — a bone in the wing of a bird that consists of the metacarpal bones and some of the carpal bones fused together
- carry one's bat — (of an opening batsman) to reach the end of an innings without being dismissed
- cartesian doubt — willful suspension of all interpretations of experience that are not absolutely certain: used as a method of deriving, by elimination of such uncertainties, axioms upon which to base theories.
- cartier-bresson — Henri (ɑ̃ri). 1908–2004, French photographer
- case conference — a meeting at which all the parties involved in a medical, legal, or social work case come together to discuss it
- cassette memory — a removable magnetic tape cartridge that stores data and programs.
- cast around for — If you cast around for something or cast about for it, you try to find it or think of it.
- cast aspersions — If you cast aspersions on someone or something, you suggest that they are not very good in some way.
- cast-iron plant — any of several plants belonging to the genus Aspidistra, of the lily family, native to eastern Asia, especially A. eliator, having large evergreen leaves often striped with white, and grown as a houseplant.
- castanospermine — a substance obtained from the Australian chestnut or black bean tree
- casters-up mode — [IBM, probably from slang belly up] Yet another synonym for "broken" or "down". Usually connotes a major failure. A system (hardware or software) which is "down" may be already being restarted before the failure is noticed, whereas one which is "casters up" is usually a good excuse to take the rest of the day off (as long as you're not responsible for fixing it).
- castner process — a process for extracting sodium from sodium hydroxide, devised by Hamilton Young Castner (1858–98)
- castrametations — Plural form of castrametation.
- casual labourer — a person who is employed on a temporary, rather than a permanent or regular basis
- catastrophising — Present participle of catastrophise.
- catastrophizing — Present participle of catastrophize.
- categoricalness — The quality of being categorical, positive, or absolute.
- categorisations — Plural form of categorisation.
- categorizations — Plural form of categorization.
- catheterisation — Alternative spelling of catheterization.
- cell disruption — Cell disruption is when a biological material becomes smaller to release proteins and enzymes.
- centrosymmetric — having symmetry with a central point
- cephalothoraxes — Plural form of cephalothorax.
- cerebrovascular — of or relating to the blood vessels and the blood supply of the brain
- ceremoniousness — The state of being ceremonious.
- chairpersonship — a person who presides over a meeting, committee, board, etc.
- chamber counsel — a counsel who advises in private and does not plead in court
- chamois leather — soft cleaning cloth