a prolapse, or falling of some organ or part; esp., the drooping of the upper eyelid, caused by the paralysis of its muscle
Origin of ptosisModern Latin from Classical Greek pt?sis, a fall, falling from piptein: see feather
Abnormal lowering or drooping of an organ or a part, especially a drooping of the upper eyelid caused by muscle weakness or paralysis.
Origin of ptosisGreek ptōsis fall from piptein ptō- to fall ; see pet- in Indo-European roots.
From Ancient Greek Ï€Ï„á¿¶ÏƒÎ¹Ï‚ (ptÅsis, “falling, a fall").