'Fayalite' definitions:

Definition of 'Fayalite'

From: GCIDE

Fayalite \Fay"al*ite\ (f[=a]"al*[imac]t), n. [So called from the island Fayal.] (Min.) A black, greenish, or brownish mineral of the chrysolite group. It is a silicate of iron. [1913 Webster]