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Down syndrome

(Encyclopedia) Down syndrome, congenital disorder characterized by mild to severe mental retardation, slow physical development, and characteristic physical features. Down syndrome affects about 1 in…

Housman, A. E.

(Encyclopedia) Housman, A. E. (Alfred Edward Housman)Housman, A. E.housˈmən [key], 1859–1936, English poet and scholar, whose verse exerted a strong influence on later poets. He left Oxford without a…

neurotransmitter

(Encyclopedia) neurotransmitter, chemical that transmits information across the junction (synapse) that separates one nerve cell (neuron) from another nerve cell or a muscle. Neurotransmitters are…

Mitchell, Joni

(Encyclopedia) Mitchell, Joni, 1943–, Canadian-American songwriter, singer, guitarist, poet, and painter, b. MacLeod (now Fort Macleod), Alta., as…

coelom

(Encyclopedia) coelomcoelomsēˈləm [key], fluid-filled body cavity, found in animals, which is lined by cells derived from mesoderm tissue in the embryo, and which provides for free, lubricated motion…

geriatrics

(Encyclopedia) geriatricsgeriatricsjĕrēăˈtrĭks [key], the branch of medicine concerned with conditions and diseases of the aged. Many disabilities in old age are caused by or related to the…

hat

(Encyclopedia) hat, headdress developed from the simple close-fitting cap and hood of antiquity. The first hat, which was distinguished as such by having a brim, was the felt petasus of the Greeks,…

Warren, Elizabeth

(Encyclopedia) Warren, Elizabeth, 1949- , American politician, b. Oklahoma City, Ok., as Elizabeth Ann Herring, Univ. of Houston (1970, B.S.);…

Thich Nhat Hanh

(Encyclopedia) Thich Nhat Hanh, 1926-2022, Zen master, b. Hue, Vietnam, as Nguyen Xuan Bao. At age 16, he began Buddhist training, completing his…

Milan, city, Italy

(Encyclopedia) MilanMilanmĭlănˈ, –änˈ [key], Ital. Milano, Lat. Mediolanum, city (1991 pop. 1,369,231), capital of Lombardy and of Milan prov., N Italy, at the heart of the Po basin. Because of its…