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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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Other Word Forms

  • ptotic 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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Doctors at Sunderland Royal Hospital were initially baffled and diagnosed her with ptosis, an eye condition characterised by the drooping of the upper eyelid, and told her to go home to rest.

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This process is called pyroptosis, from the Latin "pyro" for fire and the Greek "ptosis" for falling off, like the leaves of a tree.

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Madiysn has been diagnosed with visual impairments – alternating exotropia, convergence insufficiency and ptosis.

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Weller discovered that he had nearly every MG symptom listed except the most common: double vision and droopy eyelids known as ptosis.

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A classic sign of this is ptosis, when people can't keep their eyes open.

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