ptosis

[ toh-sis ]
/ ˈtoʊ sɪs /

noun Pathology.

a drooping of the upper eyelid.
prolapse or drooping of any organ.

Origin of ptosis

1735–45; < New Latin < Greek ptṓsis a falling

OTHER WORDS FROM ptosis

pto·tic [toh-tik] /ˈtoʊ tɪk/, adjective

Words nearby ptosis

ptolemy i, ptolemy ii, ptomaine, ptomaine poisoning, ptosed, ptosis, ptotic, ptp., pts, pts., ptsd

Example sentences from the Web for ptosis

British Dictionary definitions for ptosis

ptosis
/ (ˈtəʊsɪs) /

noun plural ptoses (ˈtəʊsiːz)

prolapse or drooping of a part, esp the eyelid

Derived forms of ptosis

ptotic (ˈtɒtɪk), adjective

Word Origin for ptosis

C18: from Greek: a falling

Medical definitions for ptosis

ptosis
[ tō′sĭs ]

n. pl. pto•ses (-sēz)

Abnormal lowering or drooping of an organ or part, especially a drooping of the upper eyelid caused by muscle weakness or paralysis.