Cite
 

Meaning of propylene glycol

pro'pylene gly'col

Pronunciation: [key]
— Chem. Chem.
  1. a colorless, viscous, hygroscopic liquid, CHO, used chiefly as a lubricant, as an antifreeze, as a heat transfer fluid, and as a solvent for fats, oils, waxes, and resins.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.