'amygdule' originates from Latin, specifically the word 'amygdala,' where 'amygdal-' meant 'almond.'

'amygdala' transformed into the French word 'amygdale,' and eventually became the modern English word 'amygdule' through geological terminology.

Initially, it meant 'almond,' but over time it evolved into its current geological meaning of 'a cavity in volcanic rock.'