alphabet

Zaffre

Definition of zaffre:

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.

Word of the day

Hyacinth

A well- known plant of the lily family with stalks of bell- shaped flowers; also, one of its bulbs or flowers. ...

more