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ptosis

[ toh-sis ]

noun

, Pathology.
  1. a drooping of the upper eyelid.
  2. prolapse or drooping of any organ.


ptosis

/ ˈtəʊsɪs; ˈtɒtɪk /

noun

  1. prolapse or drooping of a part, esp the eyelid
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Derived Forms

  • ptotic, adjective
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Other Words From

  • pto·tic [toh, -tik], adjective
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Word History and Origins

Origin of ptosis1

1735–45; < New Latin < Greek ptṓsis a falling
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Word History and Origins

Origin of ptosis1

C18: from Greek: a falling
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Example Sentences

This was diagnosed as ptosis of his organs, and an operation was done to tuck these up.

When the ptosis got very bad he would hold his eyelid up with one hand while he wrote.

This operation is performed for cases of ptosis in which there is partial or complete loss of upward movement of the lid.

They are often preceded by strabismus, with or without ptosis; the strabismus, is usually accompanied by amblyopia.

The levator palpebrae superioris is paralysed, and the resulting ptosis completes the picture.

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