'aneurism' originates from Greek, specifically the word 'aneurysma,' where 'ana-' meant 'up' and 'eurys' meant 'wide.'

'aneurysma' transformed into the Late Latin word 'aneurysma,' then into the French 'anévrisme,' and eventually became the modern English word 'aneurism' (also spelled 'aneurysm').

Initially, it meant 'a widening or dilation,' but over time it evolved into its current medical meaning of 'an abnormal bulge in a blood vessel.'