Tuesday, June 28, 2005

Tea

Beverage produced by steeping in freshly boiled water the young leaves and leaf buds of the tea plant, Camellia sinensis. Two principal varieties are used, the small-leaved China plant (C. sinensis sinensis) and the large-leaved Assam plant (C. sinensis assamica). Hybrids of these two varieties are also grown. The leaves may be fermented or left unfermented.

Monday, June 13, 2005

Cariban Languages

A group of South American Indian languages that were spoken before the Spanish conquest from what is now the Greater Antilles to the central Mato Grosso in Brazil; most of the languages, however, were spoken north of the Amazon River in what is now northern Brazil, the inland areas of the Guianas and Venezuela, and lowland Colombia. West Indian Cariban is extinct, and

Thursday, June 02, 2005

Arsenide

Any member of a rare mineral group consisting of compounds of one or more metals with arsenic (As). The coordination of the metal is almost always octahedral or tetrahedral. In the former case, each metal ion occupies a position within an octahedron composed of six oppositely charged arsenic ions, whereas in the latter each of the metal ions is surrounded by six oppositely