Definitions for: Topaz


[n] a light brown
[n] a mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone
[n] a yellow quartz



Webster (1913) Definition: To"paz, n. [OE. topas, F. topaze, L. topazos, or
topazion, a kind of precious stone, Gr. to`pazos, topa`zion;
possibly akin to Skr. tap to glow (cf. Tepid). According to
some, the name is from Topazos, a small island in the Red
Sea, where the Romans obtained a stone which they called by
this name, but which is the chrysolite of the moderns.]
1. (Min.) A mineral occurring in rhombic prisms, generally
yellowish and pellucid, also colorless, and of greenesh,
bluish, or brownish shades. It sometimes occurs massive
and opaque. It is a fluosilicate of alumina, and is used
as a gem.

2. (Zo["o]l.)Either one of two species of large, brilliantly
colored humming birds of the Topaza, of South America
and the West Indies.

Note: The two tail feathers next to the central ones are much
longer that the rest, curved, and crossed. The Throat
is metallic yellowish-green, with a tint like topaz in
the center, the belly is bright crimson, the back
bright red. Called also topaz hummer.

False topaz. (Min.) See the Note under Quartz.

Synonyms: common topaz, false topaz, tan

See Also: light brown, mineral, quartz, transparent gem

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