I. ˈtrüˌstīt noun
( -s )
Etymology: Gerard Troost died 1850 American geologist + English -ite
: a variety of willemite occurring in large reddish crystals in which the zinc is partly replaced by manganese
II. noun
( -s )
Etymology: French, from Louis J. Troost died 1911 French chemist + French -ite
: slightly tempered martensite that etches dark and cannot be resolved by the optical microscope
• troost·it·ic trüˈstid.ik adjective