Phrase guide

propionic acid

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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No pronunciation record was provided for this word.

1

noun

Meaning 1

The compound with the formula CH3CH2COOH, a naturally occurring carboxylic acid with a pungent odor.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

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 liquid fatty acid found in milk and sweat and in fuel distillates

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: propanoic acid

Antonyms: none provided

Broader terms: carboxylic acid

History

Etymology

From French acide propionique, coined by chemist Jean-Baptiste Dumas, from Ancient Greek πρῶτος (prôtos) ("first") and πίων (píōn) ("fat"), because it was the smallest carboxylic acid that exhibited the properties of the other fatty acids, such as producing an oily layer when salted out of water and having a soapy potassium salt.

Across languages

Translations

3 source translations are retained for this English entry.

  • Chinese Mandarin: 丙酸 (bǐngsuān) — a kind of fatty acid
  • Finnish: propionihappo — a kind of fatty acid
  • Swedish: propionsyra — a kind of fatty acid