troost·ite
ˈtrüˌstīt
plural -s
: a variety of willemite occurring in large reddish crystals in which the zinc is partly replaced by manganese
"
plural -s
: slightly tempered martensite that etches dark and cannot be resolved by the optical microscope
troostitic
adjective
trüˈstitik
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Merriam-Webster unabridged
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