Ptosis
noun, Pathology.
1.
a drooping of the upper eyelid.
2.
prolapse or drooping of any organ.
noun (pl) ptoses (ˈtəʊsiːz)
1.
prolapse or drooping of a part, esp the eyelid
ptosis pto·sis (tō’sĭs)
n. pl. pto·ses (-sēz)
Abnormal lowering or drooping of an organ or a part, especially a drooping of the upper eyelid caused by muscle weakness or paralysis.
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