vacuum distillation: Meaning and Definition of

vac'uum distilla"tion

Pronunciation: [key]
— Chem. Chem.
  1. a process of distillation employing a vacuum that by lowering the pressure on a liquid allows volatilization at a lower temperature than normal.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.