miosis

or my·o·sis

[ mahy-oh-sis ]

noun,plural mi·o·ses

[mahy-oh-seez]. /maɪˈoʊ siz/. Medicine/Medical.

excessive constriction of the pupil of the eye, as a result of drugs, disease, or the like.

Origin of miosis

1810–20; variant of myosis<Greek mý(ein) to shut (the eyes) + -ōsis-osis

Compare mydriasis.

Words Nearby miosis

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for miosis

miosis

myosis

/ (maɪˈəʊsɪs) /

nounplural -ses (-siːz)

excessive contraction of the pupil of the eye, as in response to drugs
a variant spelling of meiosis (def. 1)

Origin of miosis

C20: from Greek muein to shut the eyes + -osis

Derived forms of miosis

miotic or myotic (maɪˈɒtɪk), adjective, noun

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