miosis has definitions from the fields of biology,medicine,genetics
1
[ noun ] (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)
2
[ noun ] (biology,medicine) reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller

Related terms

reflex

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