proptosis

prop·to·sis

noun \präp-ˈtō-səs, prō-ˈtō-\

Definition of PROPTOSIS

: forward projection or displacement especially of the eyeball

Origin of PROPTOSIS

New Latin, from Late Latin, falling forward, from Greek proptōsis, from propiptein to fall forward, from pro- forward + piptein to fall — more at pro-, feather

First Known Use: 1676