'baccivorous' originates from Modern Latin/New Latin, specifically from Latin 'bacca' meaning 'berry' and Latin '-vorus' (from 'vorare') meaning 'eating or devouring'.

'baccivorous' was formed in English from New Latin 'baccivorus' (a compound of 'bacca' + '-vorus') and entered English usage as a technical adjective describing diet.

Initially it literally meant 'berry-devouring' in a descriptive/technical sense; over time it has retained that specific meaning and is chiefly used in scientific or literary contexts to describe organisms that eat berries.