12-letter words containing c, o, a
- benzoic acid — a white crystalline solid occurring in many natural resins, used in the manufacture of benzoates, plasticizers, and dyes and as a food preservative (E210). Formula: C6H5COOH
- beta blocker — A beta blocker is a drug which is used to treat people who have high blood pressure or heart problems.
- beta-blocker — any of various substances that interfere with the action of the beta receptors: used primarily to reduce the heart rate or force in the prevention, management, or treatment of angina, hypertension, or arrythmias.
- betacarotene — the most important form of the plant pigment carotene, which occurs in milk, vegetables, and other foods and, when eaten by man and animals, is converted in the body to vitamin A
- beyond reach — inaccessible
- bibliomaniac — excessive fondness for acquiring and possessing books.
- bibliothecal — relating to a bibliotheca
- bicollateral — (of a vascular bundle) having two phloem groups to the inside and outside, respectively, of the xylem
- bifunctional — having two functions
- bill and coo — the parts of a bird's jaws that are covered with a horny or leathery sheath; beak.
- binary color — secondary color.
- bingo caller — the person who shouts out the numbers to bingo players
- binocularity — binocular characteristics
- bioacoustics — the study of animals' use of sound
- biographical — Biographical facts, notes, or details are concerned with the events in someone's life.
- bioinorganic — pertaining to the biological activity of metal complexes and nonmetal compounds based on elements other than carbon (contrasted with bioorganic).
- biologically — pertaining to biology.
- biomagnetics — the study of magnetic fields as a form of therapy
- biomechanics — the study of the mechanics of the movement of living organisms
- biometrician — a person who is knowledgeable about biometry
- biomolecular — relating to a biomolecule
- biotechnical — relating to biotechnology
- bishop's-cap — any of a genus (Mitella) of small woodland plants of the saxifrage family, with two-lobed seedcases shaped like a bishop's hat
- black bottom — a dance of the late 1920s that originated in America, involving a sinuous rotation of the hips
- black bryony — a climbing herbaceous Eurasian plant, Tamus communis, having small greenish flowers and poisonous red berries: family Dioscoreaceae
- black canyon — a canyon of the Colorado River between Arizona and Nevada: site of Boulder Dam.
- black coffee — coffee with no milk, milk substitute, or cream added
- black cohosh — a plant of the ranunculaceous family, Cimicifuga racemosa, which is used as a natural alternative to hormone replacement therapy
- black comedy — a comedy dealing with an unpleasant situation in a pessimistic or macabre manner
- black copper — a regulus of 95-percent-pure copper, produced in a blast furnace by smelting oxidized copper ores.
- black cosmos — a garden plant, Cosmos diversifolius, of Mexico, having small, dahlialike tubers and solitary flower heads with red disk flowers and velvety, dark-red or purplish ray flowers.
- black forest — wooded mountain region in SW Germany
- black grouse — a large N European grouse, Lyrurus tetrix, the male of which has a bluish-black plumage and lyre-shaped tail
- black heroin — a very potent and addictive form of heroin that is dark-colored.
- black liquor — (in making wood pulp for paper) the liquor that remains after digestion.
- black locust — Also called false acacia, yellow locust. a North American tree, Robinia pseudoacacia, of the legume family, having pinnate leaves and clusters of fragrant white flowers.
- black poplar — a Eurasian tree, Populus nigra
- black powder — gunpowder as used in sports involving modern muzzleloading firearms
- black sapote — a tropical American tree, Diospyros digyna, related to the persimmon, having sweet, edible, green fruit that turns black when ripe.
- black scoter — a scoter of Eurasia and North America, Melanitta nigra, the adult male of which is black.
- black tongue — canine pellagra.
- black-coated — (esp formerly) (of a worker) clerical or professional, as distinguished from commercial or industrial
- blastocoelic — of or relating to the blastocoel
- blastomycete — any of a genus (Blastomyces) of yeastlike imperfect fungi that cause diseases in people and animals
- block caving — a method of mining a large block of ore by systematically undercutting so the ore will cave. Compare cave (def 5a).
- block heater — an electrically operated immersion heater fitted either to enter the water hose or the water jacket surrounding the cylinder block of a motor to warm the coolant in cold weather.
- block island — an island off the coast of and a part of Rhode Island, at the E entrance to Long Island Sound.
- block signal — a fixed railroad signal governing the movements of trains entering and using a given section of track.
- board school — (formerly) a school managed by a board elected by local ratepayers
- bobbery pack — a mixed pack of hunting dogs, often not belonging to any of the hound breeds