aneurysm

The story

1. Ancient Greek · borrowed fromἀνεύρυσμα“a widening, a dilation”
2. English todayaneurysm

From Ancient Greek ἀνεύρυσμα (aneúrusma, “a widening, a dilation”), from ἀνευρύνω (aneurúnō, “to dilate”), from ἀνά (aná, “up”) + εὐρύς (eurús, “wide”).