ptosis

noun
pto·​sis | \ ˈtō-səs How to pronounce ptosis (audio) \
plural ptoses\ ˈtō-​ˌsēz How to pronounce ptosis (audio) \

Definition of ptosis

: a sagging or prolapse of an organ or part especially : a drooping of the upper eyelid

Examples of ptosis in a Sentence

Recent Examples on the Web The technical term for my mother’s drooping eyelids was ptosis. Paul Muldoon, The New Yorker, 4 Oct. 2021 Freitag squints at my face on the screen and says my ptosis is perceptible but mild. Jancee Dunn, Vogue, 12 Mar. 2021 This is best for hiding the fact that my eyes are not symmetrical—a result of being born with ptosis, a drooping eyelid, and many operations to correct it. Gal Beckerman, The New Republic, 7 May 2018 The researchers did find that aging (duh), number of pregnancies and smoking did cause breast ptosis. Alexis Madrigal, WIRED, 2 Nov. 2007

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ptosis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ptosis

1710, in the meaning defined above

History and Etymology for ptosis

New Latin, from Greek ptōsis act of falling, from piptein

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Dictionary Entries Near ptosis

ptomatine

ptosis

ptr

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Statistics for ptosis

Last Updated

16 Oct 2021

Cite this Entry

“Ptosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ptosis. Accessed 24 Oct. 2021.

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More Definitions for ptosis

ptosis

noun
pto·​sis | \ ˈtō-səs How to pronounce ptosis (audio) \
plural ptoses\ -​ˌsēz How to pronounce ptosis (audio) \

Medical Definition of ptosis

: a sagging or prolapse of an organ or part renal ptosis especially : a drooping of the upper eyelid (as from paralysis of the oculomotor nerve)

More from Merriam-Webster on ptosis

Britannica.com: Encyclopedia article about ptosis

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