D defs.my
Entry 1 sense Webster, 1913

Troilite

· Tro·i·lite · IPA /ˈtɹɔɪlaɪt/
01 n. Native iron protosulphide, FeS. It is known only in meteoric irons, and is usually in imbedded nodular masses of a bronze color.
  1. 1.
    Native iron protosulphide, FeS. It is known only in meteoric irons, and is usually in imbedded nodular masses of a bronze color.(Min.)