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sea mouse

(Encyclopedia)sea mouse, marine worm of the genus Aphrodite with a short, broad, segmented body, found in moderately deep water. The upper, or dorsal, surface of a sea mouse bears 15 pairs of raised scales; the spa...

Shanghai Tower

(Encyclopedia)Shanghai Tower, skyscraper in Shanghai, China. Largely completed in 2015 but not opened until 2017, it is the second-tallest building in the world and the tallest structure in China, standing 2,073 ft...

Irwin, Robert

(Encyclopedia)Irwin, Robert, 1928–, American painter and sculptor, b. Long Beach, Calif. Irwin was one of the founders of the California-based Light and Space movement. Early in his career, he painted in the abst...

cofferdam

(Encyclopedia)cofferdam, temporary barrier for excluding water from an area that is normally submerged. Made commonly of wood, steel, or concrete sheet piling (see pile), cofferdams are used in constructing the fou...

Greenbelt

(Encyclopedia)Greenbelt, city (2020 pop. 24,921), Prince Georges co., W central Md., a residential suburb of Washington, D.C.; chartered 1937. Greenbelt was planned a...

elevation

(Encyclopedia)elevation, vertical distance from a datum plane, usually mean sea level to a point above the earth. Often used synonymously with altitude, elevation is the height on the earth's surface and altitude, ...

White, Robert Michael

(Encyclopedia)White, Robert Michael, 1924–2010, American aviator, b. New York City. A fighter pilot during World War II, he was shot down over Germany and held in a prisoner-of-war camp (Feb.–Apr, 1945); he was...

sinus

(Encyclopedia)CE5 Sinuses of the face sinus, cavity or hollow space in the body, usually filled with air or blood. In humans the paranasal sinuses, mucus-lined cavities in the bones of the face, are connected b...

Greely, Adolphus Washington

(Encyclopedia)Greely, Adolphus Washington, 1844–1935, American army officer and arctic explorer, b. Newburyport, Mass. Entering the Union army at 17, he emerged a brevet major of volunteers at the end of the Civi...

Galton, Sir Francis

(Encyclopedia)Galton, Sir Francis gôlˈtən [key], 1822–1911, English scientist, founder of eugenics; cousin of Charles Darwin. He turned from exploration and meteorology (where he introduced the theory of the a...