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Aksakov, Sergei Timofeyevich

(Encyclopedia)Aksakov, Sergei Timofeyevich äksäˈkôf [key], 1791–1859, Russian writer, known for his nostalgic descriptions of the Orenburg region. Aksakov's chief work is Family Chronicle (1856, tr. 1924), a...

Ciudad Rodrigo

(Encyclopedia)Ciudad Rodrigo rôᵺrēˈgō [key], town, Salamanca prov., central Spain, in Castile and León, ...

chalcopyrite

(Encyclopedia)chalcopyrite pīrīˈtēz, pə– [key], brass-yellow mineral, sometimes with an iridescent tarnish. It is a sulfide of copper and iron, CuFeS2 . It crystallizes in the tetragonal system but is usua...

Amyot, Joseph

(Encyclopedia)Amyot or Amiot, Joseph ämyōˈ [key], 1718–1794?, French Roman Catholic missionary in China, a Jesuit. He wrote a long treatise on the history, sciences, and customs of the Chinese (15 vol., 1776�...

Ghaghara

(Encyclopedia)Ghaghara gōˈgrä [key], river, major tributary of the Ganges, c.640 mi (1,030 km) long, rising in the Himalayas, SW Tibet region of China, and flowing generally S through Nepal (where it is called t...

Diogenes Laërtius

(Encyclopedia)Diogenes Laërtius lāörˈshēəs [key], fl. early 3d cent., Greek biographer. Extant is a work in 10 books on the lives and opinions of the philosophers from Thales to Epicurus, with whole books dev...

Ephratah

(Encyclopedia)Ephratah ĕfˈrăth [key], in the Bible. 1 See Bethlehem. 2 Wife of Caleb. In Psalm 132 Ephraim may be intended instead of Ephratah. ...

Vavilov, Sergei Ivanovich

(Encyclopedia)Vavilov, Sergei Ivanovich vəvēˈləf [key], 1891–1951, Russian physicist. In 1932 he became director of the P. N. Lebedev Physical Institute, which he organized around the laboratory of the Sovie...

Puerto Vallarta

(Encyclopedia)Puerto Vallarta väyärˈtä [key], city (1990 pop. 93,503), Jalisco state, W Mexico. Located on the expansive Bahía de Banderas [Bay of Flags], Puerto Vallarta has been used since the 16th cent. as ...

pyrogallol

(Encyclopedia)pyrogallol –ĭk [key], C6H6O3, white, crystalline, aromatic compound with a biting taste; it is poisonous. It melts at 133℃ and boils at 309℃. In alkaline solution it is an active reducing agent...