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Baskin, Leonard

(Encyclopedia) Baskin, Leonard, 1922–2000, American sculptor, graphic artist, and teacher, b. New Brunswick, N.J. In sculptural and graphic works that are figurative in style, Baskin's images of a…

cockle

(Encyclopedia) cockle, common name applied to the heart-shaped, jumping or leaping marine bivalve mollusks, belonging to the order Eulamellibranchia. The brittle shells are of uniform size, are…

kangaroo

(Encyclopedia) kangaroo, name for a variety of hopping marsupials, or pouched mammals, of the family Macropodidae, found in Australia, Tasmania, and New Guinea. The term is applied especially to the…

Brachiopoda

(Encyclopedia) CE5 Internal anatomy of a lamp shell, Magellania, representative of the phylum Brachiopoda BrachiopodaBrachiopodabrākēŏpˈədə [key], phylum of shelled sessile or sedentary marine…

carbon cycle

(Encyclopedia) CE5 Carbon cycle carbon cycle, in biology, the exchange of carbon between living organisms and the nonliving environment. Inorganic carbon dioxide in the atmosphere is converted by…

Santayana, George

(Encyclopedia) Santayana, GeorgeSantayana, Georgesäntäyäˈnä [key], 1863–1952, American philosopher and poet, b. Madrid, Spain. Santayana's philosophic stance has been given the apparently opposite…

rickettsia

(Encyclopedia) rickettsiarickettsiarĭkĕtˈsēə [key], any of an order (Rickettsiales) of very small microorganisms, many disease-causing, that live in vertebrates and are transmitted by bloodsucking…

fur

(Encyclopedia) fur, hairy covering of an animal, especially the skins of animals that have thick, soft, close-growing hair next to the skin itself and coarser protective hair above it. The underhair…

Haldane, John Burdon Sanderson

(Encyclopedia) Haldane, John Burdon SandersonHaldane, John Burdon Sandersonhôlˈdān, –dən [key], 1892–1964, British geneticist, biologist, and popularizer of science; son of John Scott Haldane. He…

anticoagulant

(Encyclopedia) anticoagulantanticoagulantănˌtēkōăgˈyələnt [key], any of several substances that inhibit blood clot formation (see blood clotting). Some anticoagulants, such as the coumarin…