proptosis

noun

prop·​to·​sis präp-ˈtō-səs How to pronounce proptosis (audio) prō-ˈtō- How to pronounce proptosis (audio)
: forward projection or displacement especially of the eyeball

Examples of proptosis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Bulging or protruding eyes (proptosis or exophthalmos) can be a sign of Graves disease, a disorder causing overactivity of the thyroid gland (hyperthyroidism). Claire Gillespie, SELF, 19 Oct. 2017

Word History

Etymology

New Latin, from Late Latin, falling forward, from Greek proptōsis, from propiptein to fall forward, from pro- forward + piptein to fall — more at pro-, feather

First Known Use

1676, in the meaning defined above

Time Traveler
The first known use of proptosis was in 1676

Dictionary Entries Near proptosis

Cite this Entry

“Proptosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proptosis. Accessed 23 Nov. 2024.

Medical Definition

proptosis

noun
plural proptoses -ˌsēz How to pronounce proptosis (audio)
: forward projection or displacement especially of the eyeball

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