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

Examples of miosis in a Sentence

Recent Examples on the Web

Medications, trauma, and medical conditions can lead to abnormally small pupils (miosis). — Maxine Lipner, Verywell Health, 19 Mar. 2025

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

Rhymes for miosis

• gnosis
• ptosis
• acanthosis
• acidosis
• alkalosis
• amaurosis
• ankylosis
• asbestosis
• brucellosis
• cyanosis
• dermatosis
• diagnosis

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