propylene glycol

Definitions of propylene glycol
  1. noun
    a sweet colorless, viscous, hygroscopic liquid used as an antifreeze and in brake fluid and also as a humectant in cosmetics and personal care items although it can be absorbed through the skin with harmful effects
    synonyms: propanediol
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    type of:
    antifreeze
    a liquid added to the water in a cooling system to lower its freezing point
    humectant
    any substance that is added to another substance to keep it moist
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