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

Cite this Entry

“Miosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/miosis. Accessed 18 Jun. 2024.

Medical Definition

miosis

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