ptoses

ptosis

[toh-sis]
noun Pathology.
1.
a drooping of the upper eyelid.
2.
prolapse or drooping of any organ.

Origin:
1735–45; < Neo-Latin < Greek ptṓsis a falling

ptotic [toh-tik] , adjective
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ptosis (ˈtəʊsɪs)
 
n , pl ptoses
prolapse or drooping of a part, esp the eyelid
 
[C18: from Greek: a falling]
 
ptotic
 
adj

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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.

The American Heritage® Stedman's Medical Dictionary
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