Standard Lemma guide

propanediol

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

Any of four diols derived from propane, usually the forms 1,2-propanediol and 1,3-propanediol, but especially 1,2-propanediol known as propylene glycol

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

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

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: propylene glycol

Antonyms: none provided

Broader terms: antifreeze, humectant

History

Etymology

From propane + diol.