ptosis
[toh-sis]
- a drooping of the upper eyelid.
- prolapse or drooping of any organ.
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Origin of ptosis
1735–45; < New Latin < Greek ptṓsis a falling
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ptosis
Historical Examples
This was diagnosed as ptosis of his organs, and an operation was done to tuck these up.
PsychotherapyJames J. Walsh
Eye-strain is another; ptosis, or falling of the organs, is another.
Outwitting Our NervesJosephine A. Jackson and Helen M. Salisbury
Frequent transitory or permanent strabismus or ptosis, one or both.
Neuralgia and the Diseases that Resemble itFrancis E. Anstie
There was marked proptosis, subconjunctival ecchymosis, swelling and ecchymosis of the upper lid, and ptosis.
Surgical Experiences in South Africa, 1899-1900George Henry Makins
Ptosis and lateral squint, with a fixed and dilated pupil, indicates pressure on the oculo-motor nerve of the same side.
ptosis
- prolapse or drooping of a part, esp the eyelid
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Word Origin
C18: from Greek: a falling
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for ptosis
n.
1743, from Greek ptosis, literally "falling, a fall," also "the case of a noun," nominal derivative of piptein "to fall" (see symptom). In English, especially of the eyelid. Related: Ptotic.
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Online Etymology Dictionary, © 2010 Douglas Harper
ptosis
(tō′sĭs)- Abnormal lowering or drooping of an organ or part, especially a drooping of the upper eyelid caused by muscle weakness or paralysis.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.