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miosis

mi·o·sis [ mī ṓssiss ] (plural mi·o·ses [ mī ṓ sz ]) or my·o·sis [ mī ṓssiss ] (plural my·o·ses [ mī ṓ sz ])

noun

Definition:

contraction of pupil: a contraction of the pupil of the eye, e.g. a contraction caused by a reaction to a drug

[Early 19th century. < Greek muein "shut the eyes"]

mi·ot·ic, my·ot·ic [ mī óttik ] adjective

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