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Perkins School for the Blind

(Encyclopedia)Perkins School for the Blind, at Watertown, Mass.; chartered 1829, opened 1832 in South Boston as the New England Asylum for the Blind, with Samuel G. Howe as its director; moved 1912. From 1877 to 19...

coronavirus

(Encyclopedia)coronavirus, any of a group (family Coronaviridae, subfamily Orthocoronavirinae) of enveloped single-stranded RNA viruses that have a crownlike or sunlike appearance under an electron microscope due t...

fungicide

(Encyclopedia)fungicide fŭnˈjəsīdˌ, fŭngˈgə– [key], any substance used to destroy fungi. Some fungi are extremely damaging to crops (see diseases of plants), and others cause diseases in humans and other ...

DDT

(Encyclopedia)DDT or 2,2-bis(p-chlorophenyl)-1,1,1,-trichloroethane, chlorinated hydrocarbon compound used as an insecticide. First introduced during the 1940s, it killed insects that spread disease and fed on crop...

Baghdadi, Abu Bakr al-

(Encyclopedia)Baghdadi, Abu Bakr al-, nom de guerre of Awwad Ibrahim Ali al-Badri al-Samarrai, 1971–2019, Iraqi jihadist leader. Following the U.S. invasion of Iraq in 2003, he helped found a Sunni militia. Arres...

reserpine

(Encyclopedia)reserpine rĕsûrˈpēn [key], alkaloid isolated from the root of the snakeroot plant (Rauwolfia serpentina), a small evergreen climbing shrub of the dogbane family native to the Indian subcontinent. ...

Flint, city, United States

(Encyclopedia)Flint, city (2020 pop. 81,252), seat of Genesee co., SE Mich., on the Flint River; inc. 1855. Since 1902 it has been an automobile-manufacturing centers...

Rogers, Carl

(Encyclopedia)Rogers, Carl, 1902–87, American psychologist, b. Oak Park, Ill. In 1930, Rogers served as director of the Society for the Prevention of Cruelty to Children in Rochester, New York. He lectured at the...

W and Z particles

(Encyclopedia)W and Z particles, elementary particles that mediate, or carry, the fundamental force associated with weak interactions. The discovery of the W and Z particles at CERN near Geneva, Switzerland, in the...

Dummer, Jeremiah, c.1680–1739, colonial agent for Massachusetts and Connecticut

(Encyclopedia)Dummer, Jeremiah, c.1680–1739, colonial agent for Massachusetts and Connecticut, b. Boston; son of Jeremiah Dummer (1645–1718). He saw little opportunity for business in Boston and settled in Engl...