Ptosis Definition

tōsĭs
ptoses
noun
A prolapse, or falling of some organ or part; esp., the drooping of the upper eyelid, caused by the paralysis of its muscle.
Webster's New World

Other Word Forms of Ptosis

Noun

Singular:
ptosis
Plural:
ptoses

Origin of Ptosis

  • Greek ptōsis fall from piptein ptō- to fall pet- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek πτῶσις (ptōsis, “falling, a fall").

    From Wiktionary

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