'auxesis' originates from Ancient Greek, specifically the word 'αὔξησις' (auxēsis), where 'auxein' meant 'to increase' or 'to grow'.

'auxesis' was borrowed into Late Latin/New Latin as 'auxēsis' and entered English via scholarly and rhetorical usage, eventually yielding the plural form 'auxeses'.

Initially, it meant 'increase' or 'growth' in a general, often biological sense, but over time it also acquired the specialized rhetorical meaning of 'amplification' or 'climax'.