ptosis
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.pto·sis
noun \ˈtō-səs\ plural pto·ses \-ˌsēz\
Definition of PTOSIS
: a sagging or prolapse of an organ or part; especially : a drooping of the upper eyelid
Origin of PTOSIS
New Latin, from Greek ptōsis act of falling, from piptein
First Known Use: 1743
pto·sis
noun \ˈtō-səs\ (Medical Dictionary)plural ; pto·ses \-ˌsēz\ (audio pronunciation)
Medical Definition of PTOSIS
: a sagging or prolapse of an organ or part <renal ptosis>; especially : a drooping of the upper eyelid (as from paralysis of the oculomotor nerve)
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