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diode

(Encyclopedia)diode dīˈōd [key], two-terminal electronic device that permits current flow predominantly in only one direction. Most diodes are semiconductor devices; diode electron tubes are now used only for a ...

Hercules, Greek hero

(Encyclopedia)Hercules both: hĕrˈəklēzˌ [key], most popular of all Greek heroes, famous for extraordinary strength and courage. Alcmene, wife of Amphitryon, made love to both Zeus and her husband on the same n...

madder

(Encyclopedia)CE5 Bluet, Houstonia caerulea, a member of the madder family madder, common name for the Rubiaceae, a family of chiefly tropical and subtropical trees, shrubs, and herbs, especially abundant in N ...

Borgia, Cesare

(Encyclopedia)Borgia, Cesare or Caesar bōrˈjä [key], 1476–1507, Italian soldier and politician, younger son of Pope Alexander VI and an outstanding figure of the Italian Renaissance. Throughout his pontificat...

sequoia

(Encyclopedia)sequoia sĭkwoiˈə [key], name for the redwood (Sequoia sempervirens) and for the big tree, or giant sequoia (Sequoiadendron giganteum), both huge, coniferous evergreen trees of the bald cypress fami...

poultry

(Encyclopedia)poultry, domesticated fowl kept primarily for meat and eggs; including birds of the order Galliformes, e.g., the chicken, turkey, guinea fowl, pheasant, quail, and peacock; and natatorial (swimming) b...

Columbia, cities, United States

(Encyclopedia)Columbia kəlŭmˈbēə [key]. 1 City (2020 pop. 104,681), Howard co., central Md., between W...

Amis, Sir Kingsley

(Encyclopedia)Amis, Sir Kingsley āˈmĭs [key], 1922–95, English novelist. He attended St. John's College, Oxford (B.A., 1949) and for some 20 years taught at Oxford, Swansea, and Cambridge and in the United Sta...

Morrison, Toni

(Encyclopedia)Morrison, Toni, 1931–2019, American writer, b. Lorain, Ohio, as Chloe Ardelia (later Anthony) Wofford; B.A. Howard Univ., 1953, M.F.A. Cornell, 1955. Her fiction is noted for its poetic language, lu...

transcontinental railroad

(Encyclopedia)transcontinental railroad, in U.S. history, rail connection with the Pacific coast. In 1845, Asa Whitney presented to Congress a plan for the federal government to subsidize the building of a railroad...