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injection

(Encyclopedia) injection, introduction of a fluid into the body, usually by means of a needle and syringe. The material injected may be a test substance (as in determining allergic sensitivity or…

Jacobi, Friedrich Heinrich

(Encyclopedia) Jacobi, Friedrich Heinrich, 1743–1819, German philosopher. Although educated for commerce, he early gave up business and became in 1770 a member of the council for the duchies of Berg…

Marshall, Alfred

(Encyclopedia) Marshall, Alfred, 1842–1924, English economist. At Cambridge, where he taught from 1885 to 1908, he exerted great influence on the development of economic thought of the time; one of…

Dalin, Olof von

(Encyclopedia) Dalin, Olof vonDalin, Olof von&oomacr;ˈlôv fən dälēnˈ [key], 1708–63, Swedish historian, poet, and journalist, the foremost figure of the Swedish Enlightenment. In his successful…

Dacia

(Encyclopedia) DaciaDaciadāˈshə [key], ancient name of the European region corresponding roughly to modern Romania (including Transylvania). It was inhabited before the Christian era by a people who…

lac

(Encyclopedia) lac, resinous exudation from the bodies of females of a species of scale insect (Tachardia lacca), from which shellac is prepared. India is the chief source of shellac, although some…

Kalevala

(Encyclopedia) KalevalaKalevalakäˈlĕväˌlä [key], Finnish national epic. It is a compilation of verses recounting extraordinary deeds of three semidivine brothers from mythical Kaleva, land of the…

Lederberg, Joshua

(Encyclopedia) Lederberg, JoshuaLederberg, Joshualāˈdərbûrgˌ [key], 1925–2008, American geneticist, b. Montclair, N.J., grad. Columbia, 1944, Ph.D. Yale, 1948. He is known for his studies of the…

Empedocles

(Encyclopedia) EmpedoclesEmpedoclesĕmpĕdˈəklēz [key], c.495–c.435 b.c., Greek philosopher, b. Acragas (present Agrigento), Sicily. Leader of the democratic faction in his native city, he was offered…

Entoprocta

(Encyclopedia) CE5 A. Internal anatomy of a single animal in a Pedicellina colony B. Part of a colony of Pedicellina, representative of the phylum Entoprocta EntoproctaEntoproctaĕnˌtəprŏkˈtə [key…