Definition of eicosapentaenoic acid in English:

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eicosapentaenoic acid

Pronunciation: /ˌʌɪkɒsəˌpɛntiːˈnəʊɪk/


[mass noun] Chemistry
A polyunsaturated fatty acid found especially in fish oils.
  • Chemical formula: C19H29COOH
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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