n. [ F. talc; cf. Sp. & It. talco, LL. talcus; all fr. Ar. talq. ] (Min.) A soft mineral of a soapy feel and a greenish, whitish, or grayish color, usually occurring in foliated masses. It is hydrous silicate of magnesia.
Indurated talc,
‖n. [ NL. ] (Min.) Same as Talc. [ Webster 1913 Suppl. ]