Webster’s Revised Unabridged Dictionary · 1913
Troilite
Tro′i·lite (·ĭ·līt), n. [Named after Dominico Troili, an Italian of the 18th century.] (Min.) Native iron protosulphide, FeS. It is known only in meteoric irons, and is usually in imbedded nodular masses of a bronze color.