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Reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
Answer for the clue "Reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller ", 6 letters:
miosis
Alternative clues for the word miosis
Word definitions for miosis in dictionaries
WordNet
Word definitions in WordNet
n. (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants) [syn: meiosis , reduction ...
Wiktionary
Word definitions in Wiktionary
n. Contraction of the pupil of the eye.
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
1819, from Greek myein "to shut (the eyes)" + -osis . Greek myein is perhaps originally "to close the lips," from PIE *meue- "to be silent" (see mute (adj.)). Related: Miotic .