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Meaning of heat of vaporization

heat' of vaporiza'tion

Pronunciation: [key]
— Physics. Physics.
  1. the heat absorbed per unit mass of a given material at its boiling point that completely converts the material to a gas at the same temperature: equal to the heat of condensation. Cf. latent heat.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.