'Nagyagite' definitions:

Definition of 'Nagyagite'

From: GCIDE

Nagyagite \Nag"yag*ite\, n. [So called from Nagyag, in Transylvania.] (Min.) A mineral of blackish lead-gray color and metallic luster, generally of a foliated massive structure; foliated tellurium. It is a telluride of lead and gold. [1913 Webster]