• Webster's Revised Unabridged Dictionary
    • n Troostite (Min) Willemite.
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Century Dictionary and Cyclopedia
    • n troostite A transition form between austenite and pearlite, in steel. See sorbite, 2.
    • n troostite A variety of the zinc silicate willemite, occurring in hexagonal crystals of a reddish color. It contains considerable manganese.
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Webster's Revised Unabridged Dictionary
So named after Dr. Gerard Troost, of Nashville, Tenn


In literature:

Troostite is of doubtful composition, but possibly is an unstable mixture of untransformed martensite with sorbite.
"The Working of Steel" by Fred H. Colvin