miosis

noun

mi·​o·​sis mī-ˈō-səs How to pronounce miosis (audio)
mē-
variants or less commonly myosis
plural mioses also myoses mī-ˈō-ˌsēz How to pronounce miosis (audio)
: excessive smallness or contraction of the pupil of the eye

Word History

Etymology

New Latin, from Greek myein to be closed (of the eyes) + New Latin -osis

First Known Use

1807, in the meaning defined above

Time Traveler
The first known use of miosis was in 1807

Dictionary Entries Near miosis

miombo

miosis

miothermic

See More Nearby Entries 

Cite this Entry

“Miosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/miosis. Accessed 1 Dec. 2024.

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Medical Definition

miosis

noun
mi·​o·​sis
variants also myosis
mī-ˈō-səs How to pronounce miosis (audio) mē- How to pronounce miosis (audio)
plural mioses also myoses -ˌsēz How to pronounce miosis (audio)
: excessive smallness or contraction of the pupil of the eye
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