English

ergocalciferol

From ergo- + calciferol.

Proto-Indo-European *werǵ- ‘to make’

Proto-Indo-European *wérǵom ‘work’

Proto-Hellenic *wérgon ‘work’

Ancient Greek ἔργον ‘work or deed of war’

English ergo-

Today it means

noun Constituent of vitamin D₁ and vitamin D₂.

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

Etymograph / ergocalciferol