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Guaporé

(Encyclopedia)Guaporé gwəpo͝orĕˈ [key], river, c.750 mi (1,207 km) long, rising in the mountains of Mato Grosso state, W Brazil. It flows northwest through rain forest and forms part of the Brazil-Bolivia bord...

carambola

(Encyclopedia)carambola kărˌəmbōˈlə [key], orange fleshy fruit of Averrhoa carambola, a small shrub in the wood sorrel family (Oxalidaceae). The fruits have five very prominent ridges, and in transverse secti...

pellagra

(Encyclopedia)pellagra pəlăgˈrə [key], deficiency disease due to a lack of niacin (nicotinic acid), one of the components of the B complex vitamins in the diet. Niacin is plentiful in yeast, organ meats, peanut...

Donen, Stanley

(Encyclopedia)Donen, Stanley, 1924–2019, American film director, choreographer, and producer, b. Columbia, S.C. He is best known for directing some of Metro-Goldwyn-Mayer's finest musicals. In 1940 Donen danced i...

thunderstorm

(Encyclopedia)thunderstorm, violent, local atmospheric disturbance accompanied by lightning, thunder, and heavy rain, often by strong gusts of wind, and sometimes by hail. The typical thunderstorm caused by convect...

lemon

(Encyclopedia)lemon, one of the citrus fruits, from a tree (Citrus limon) of the family Rutaceae (orange family), probably native to India. A small tree (to about 15 ft/5 m tall) with thorny branches and purple-edg...

virus

(Encyclopedia)CE5 Structure of a tobacco mosaic virus, an RNA-containing virus virus, parasite with a noncellular structure composed mainly of nucleic acid within a protein coat. Most viruses are too small (100...

carbonate

(Encyclopedia)carbonate kärˈbənātˌ, –nət [key], chemical compound containing the carbonate radical or ion, CO3−2. Most familiar carbonates are salts that are formed by reacting an inorganic base (e.g., a ...