Meaning of heat of sublimation

heat' of sublima'tion

Pronunciation: [key]
— Physics. Physics.
  1. the heat absorbed by one gram or unit mass of a substance in the process of changing, at a constant temperature and pressure, from a solid to a gaseous state. Cf. sublime (def. 10).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.