'Eucairite' definitions:

Definition of 'Eucairite'

From: GCIDE

Eucairite \Eu*cai"rite\, n. [Gr. ? seasonable, opportune; e'y^ well, good + ? season.] (Min.) A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium. [1913 Webster]