miosis

noun

mi·​o·​sis mī-ˈō-səs 

mē-

variants or less commonly myosis

plural mioses also myoses mī-ˈō-ˌsēz 

: 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

Medical Definition

miosis

noun

mi·​o·​sis

variants also myosis

mī-ˈō-səs  mē- 

plural mioses also myoses -ˌsēz 

: excessive smallness or contraction of the pupil of the eye