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olive

(Encyclopedia)olive, common name for the Oleaceae, a family of trees and shrubs (including climbing forms) of warm temperate climates and of the Old World tropics, especially Asia and the East Indies. Many are popu...

lichen

(Encyclopedia)lichen līˈkən [key], usually slow-growing organism of simple structure, composed of fungi (see Fungi) and photosynthetic green algae or cyanobacteria living together in a symbiotic relationship and...

boa

(Encyclopedia)boa bōˈə [key], name for live-bearing constrictor snakes of the family Boidae, found mostly in the Americas. This family, which also comprises the egg-laying pythons of the Old World, includes the ...

cyanobacteria

(Encyclopedia)cyanobacteria sīˌənōbăktĭrˈēə, sī-ănˌō– [key] or blue-green algae, photosynthetic bacteria that contain chlorophyll. For many years they were classified in the plant kingdom along with ...

Greensburg

(Encyclopedia)Greensburg. 1 City (2020 pop. 14,976), seat of Westmoreland co., SW Pa.; settled c.1770, inc. as a city 1928. Located in a coal area, the city ...

Ford, John, American film director

(Encyclopedia)Ford, John, 1895–1973, American film director, b. Cape Elizabeth, Maine, as John Martin Feeney. Ford began directing in 1917 after an apprenticeship with his brother Francis. Over the next 50 years,...

Sunita, Narain

(Encyclopedia)Sunita, Narain, 1961–, Indian writer and environmentalist, b. New Delhi, India, graduated from University of Delhi, honorary degrees from Cranfield ...

Auerbach, Erich

(Encyclopedia)Auerbach, Erich, 1892–1957, German-American philologist, literary scholar, and critic, b. Berlin, Ph.D. Univ. of Greifswald, 1921. He is known primarily for Mimesis: The Representation of Reality in...

opal

(Encyclopedia)opal ōˈpəl [key], a mineral consisting of poorly crystalline to amorphous silica, SiO2·nH2O; the water content is quite variable but usually ranges from 3% to 10%. Common opal is usually colorless...

mamba

(Encyclopedia)mamba, name for African snakes of the genus Dendroaspis, in the cobra family. Widely distributed throughout Africa except in the deserts, mambas have extremely toxic venom. When attacking they raise t...