'vasiform' originates from Latin, specifically the word 'vas', where 'vas' meant 'vessel; vase', combined with the Latin suffix '-formis' (from 'forma') meaning 'shape' or 'form'.

'vasiform' was formed in New Latin as 'vasiformis' for descriptive and scientific use (especially in biology) and entered English usage in the 19th century as the adjective 'vasiform'.

Initially it meant 'vessel-shaped' in the literal sense, and over time it retained this specialized sense of 'vase-shaped' in scientific and descriptive contexts.