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obsidian

(Encyclopedia)obsidian ŏbsĭdˈēən [key], a volcanic glass, homogeneous in texture and having a low water content, with a vitreous luster and a conchoidal fracture. The color is commonly black, but may be some s...

Papahānaumokuākea Marine National Monument

(Encyclopedia)Papahānaumokuākea Marine National Monument, 582,578 sq mi (1,508,870 sq km), in the Pacific Ocean surrounding the NW Hawaiian Islands, c.270 mi (435 km) NW of Oahu; est. 2006 as Northwestern Hawaiia...

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...

Dover, cities, United States

(Encyclopedia)Dover. 1 City (2020 pop. 39,403), state capital, and seat of Kent co., central Del., on the St. Jones River; founded 1683 on orders of William ...

Protista

(Encyclopedia)Protista prōˌtŏktĭsˈtə [key], in the five-kingdom system of classification, a kingdom comprising a variety of unicellular and some simple multinuclear and multicellular eukaryotic organisms. Pro...

warbler

(Encyclopedia)warbler, name applied in the New World to members of the wood warbler family (Parulidae) and in the Old World to a large family (Sylviidae) of small, drab, active songsters, including the hedge sparro...

laburnum

(Encyclopedia)laburnum ləbûrˈnəm [key] or golden chain, small tree (Laburnum anagyroides) of the family Leguminosae (pulse family) with decorative dark green leaves and sprays of bright yellow flowers. It is na...

mastic

(Encyclopedia)mastic, resin obtained from the small mastic tree Pistacia lentiscus (of the sumac family), found chiefly in Mediterranean countries. When the bark of the tree is injured, the resin exudes in drops. I...

Arciniegas, Germán

(Encyclopedia)Arciniegas, Germán hĕrmänˈ ärsēnyāˈgäs [key], 1900–1999, Colombian historian and diplomat. A leading Latin American intellectual, he gained prominence as a journalist and publisher. A criti...

Nahman of Bratslav

(Encyclopedia)Nahman of Bratslav näkhˈmən, brätˈsläf [key], 1772–1810, Jewish Hasidic leader, the great-grandson of the Baal-Shem-Tov. His messianic pretensions put him in conflict with other Hasidic (see H...