Med. a forward or downward displacement; protrusion, as of the eyeball
Origin of proptosisModern Latin from Late Latin from Classical Greek propt?sis from propiptein, to fall forward from pro-, before (see pro-) + piptein, to fall: see feather
Forward displacement of an organ, especially an eyeball.
Origin of proptosisLate Latin proptōsis prolapse from Greek from propiptein to fall forward pro- forward ; see pro- 2. piptein ptō- to fall ; see pet- in Indo-European roots.