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equivalent weight

(Encyclopedia)equivalent weight. The equivalent weight of an element or radical is equal to its atomic weight or formula weight divided by the valence it assumes in compounds. The unit of equivalent weight is the a...

Jordan, river, Asia

(Encyclopedia)Jordan, river, c.200 mi (320 km) long, formed in the Hula basin, N Israel, by the confluence of three headwater streams and meandering S through the Sea of Galilee to the Dead Sea; the region of Pales...

nitric acid

(Encyclopedia)nitric acid, chemical compound, HNO3, colorless, highly corrosive, poisonous liquid that gives off choking red or yellow fumes in moist air. It is miscible with water in all proportions. It forms an a...

tenrec

(Encyclopedia)tenrec tĕnˈrĕk [key], any of the small insectivorous mammals of the family Tenrecidae, also called tendrecs or tanrecs. These animals are found on the island of Madagascar. In that closed environme...

blue whale

(Encyclopedia)blue whale, a baleen whale, Balaenoptera musculus. Also called the sulphur-bottom whale and Sibbald's rorqual, it is the largest animal that has ever lived. Blue whales have been known to reach a leng...

river

(Encyclopedia)river, stream of water larger than a brook or creek. Land surfaces are never perfectly flat, and as a result the runoff after precipitation tends to flow downward by the shortest and steepest course i...

Kislovodsk

(Encyclopedia)Kislovodsk kēsləvôtskˈ [key] [Rus.,=sour water], city (1989 pop. 114,000), S European Russia, in the N Caucasus Mts. It is a famous health resort with mineral springs, sanatoriums, and a physico-t...

Galashiels

(Encyclopedia)Galashiels gălˌəshēlzˈ [key], town, Scottish Borders, SE Scotland, on the Gala Water. Famous for ...

Djerid, Chott

(Encyclopedia)Djerid, Chott shôt jĕrēdˈ [key], salt lake, c.1,900 sq mi (4,920 sq km), W central Tunisia, N Africa. It is now an extensive salt flat with water only in its lower areas. ...

Fielding, Antony Vandyke Copley

(Encyclopedia)Fielding, Antony Vandyke Copley, 1787–1855, English landscape painter in watercolor. For the last 24 years of his life he was president of the Water Colour Society, where he exhibited yearly. Fieldi...