English

isobutyric

From iso- + butyric.

Ancient Greek ἴσος ‘equal’

English iso-

Ancient Greek βούτῡρον ‘butter’

Latin būtȳrum ‘butter’

French butyrique

Today it means

adj Of or pertaining to isobutyric acid or its derivatives

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

Etymograph / isobutyric