Dictionaryaus•ten•itePronunciation: (ô'stu-nīt"), [key] —n. Metall. 1. a solid solution of carbon or of carbon and other elements in gamma iron, having a face-centered cubic lattice at all temperatures. 2. an allotrope of iron, stable between 910°C and 1400°C and having a face-centered cubic lattice; gamma iron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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