excessive constriction of the pupil of the eye, as a result of drugs, disease, or the like.
- Compare mydriasis.
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British Dictionary definitions for miosis
excessive contraction of the pupil of the eye, as in response to drugs
a variant spelling of meiosis (def. 1)
- miotic or myotic (maɪˈɒtɪk), adjective, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012