English

heneicosapentaenoic acid

From hen- + eicosa- + penta- + -ene + -oic (+ acid)

Formed from hen- + eicosa- + penta- + -ene + -oic

Proto-Indo-European *dwi- ‘two’

Proto-Indo-European *déḱm̥ ‘ten’

Proto-Indo-European *(h₁)wídḱm̥ti ‘twenty’

Proto-Hellenic *ewī́kəti

Ancient Greek εἴκοσι ‘twenty’

Proto-Indo-European *pénkʷe ‘five’

Proto-Hellenic *pénkʷe ‘five’

Ancient Greek πέντε ‘five’

Today it means

noun The omega-3 fatty acid (6Z,9Z,12Z,15Z,18Z)-henicosa-6,9,12,15,18-pentaenoic acid

Language periods are conventional ranges, not dates for this word.

Etymograph / heneicosapentaenoic acid