Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from The Century Dictionary.

  • noun A falling down or prolapse of any of the abdominal viscera. Also called Glenard's disease and enteroptosis.
  • A falling of the upper eyelid, or inability to raise it, due to paralysis of the levator palpebræ.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Med.) Drooping of the upper eyelid, produced by paralysis of its levator muscle.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The prolapse of a bodily organ, especially drooping of the eyelid.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun drooping of the upper eyelid caused by muscle paralysis and weakness

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek ptōsis, fall, from piptein, ptō-, to fall; see pet- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek πτωσις ("falling, a fall").

Examples

Comments

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  • a. spec. Drooping of the upper eyelid from paralysis of the elevator muscle.

    b. Prolapsus of any of the viscera or of the breasts.

    February 3, 2007