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Meaning of transformation point

transforma'tion point"

Pronunciation: [key]
— Metall. Metall.
  1. a temperature at which the transformation of one microconstituent to another begins or ends during heating or cooling. Also called transforma&prim;tion tem&sec;perature.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.