Definition of eicosapentaenoic acid in English:

eicosapentaenoic acid

Syllabification: ei·co·sa·pen·ta·e·no·ic ac·id
Pronunciation: /ˌīkōsəˌpen(t)əˌnōik ˈasəd


A polyunsaturated fatty acid found especially in fish oils. In humans it is a metabolic precursor of prostaglandins.
More example sentences
  • Oils from deep sea fish are a rich source of omega - 3 polyunsaturated fatty acids, particularly eicosapentaenoic acid and docosahexaenoic acid.
  • Your brain needs long-chain polyunsaturated fatty acids to function properly and two types - eicosapentaenoic acid and docosahexaenoic acid - have come up trumps.
  • According to a new book, eicosapentaenoic acid is a substance that can ‘significantly alleviate the symptoms of depression, even in its most severe forms.’


1960s: from Greek eicosa- 'twenty' (the number of carbon atoms in the molecule) + penta- 'five' (the number of unsaturated bonds) + -ene + -oic on the pattern of methanoic.

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