Results for zaffre

Definitions of zaffre:

part of speech: noun

The impure oxide of cobalt, which, melted with silica and potash, and reduced to powder, becomes the powder- blue of commerce.

part of speech: noun

Impure oxide of cobalt: the residuum of cobalt, after the sulphur, arsenic, and other volatile matters have been expelled by calcination. So that it is a gray or dark- gray oxide of cobalt, mixed with a portion of silica. When fused into a glass it is intensely blue, and is much used by enamellers and porcelain manufacturers as a blue color.

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A hard and usually pointed projection, growing upon the head of certain animals, especially cattle; goats, deer, etc.; the material of which animals horns are composed; a thickened form of tissue; a musical wind- instrument; one of the extremities or ends of the moon when in crescent form. ...

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