| 释义 |
pto·sis
\ˈtōsə̇s\ noun
(plural pto·ses \-ōˌsēz\)
Etymology: New Latin, from Greek ptōsis fall, falling, from piptein to fall
: a sagging or prolapse of an organ or part (as one of the abdominal viscera)
< renal ptosis >
specifically : drooping of the upper eyelid (as from paralysis of the oculomotor nerve) |