Phrase guide

trans fatty 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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1

noun

Meaning 1

An unsaturated fatty acid in which one or more of the double bonds has the trans orientation instead of the usual cis orientation.

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 fatty acid that has been produced by hydrogenating an unsaturated fatty acid (and so changing its shape); found in processed foods such as margarine and fried foods and puddings and commercially baked goods and partially hydrogenated vegetable oils

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: fatty acid

Narrower terms: elaidic acid

History

Etymology

No etymology was provided for this word.

Across languages

Translations

5 source translations are retained for this English entry.

  • Chinese Mandarin: 反式脂肪酸 (fǎnshì zhīfángsuān) — type of unsaturated fatty acid
  • Danish: transfedtsyre — type of unsaturated fatty acid
  • Finnish: transrasvahappo — type of unsaturated fatty acid
  • Norwegian Bokmål: transfettsyre — type of unsaturated fatty acid
  • Russian: транс-изомеры жирная кислота́ (trans-izomery žirnaja kislotá) — type of unsaturated fatty acid