Noun has 2 senses

• miosis(n = noun.process) meiosis, reduction division - (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);





• miosis(n = noun.act) light reflex, myosis, pupillary reflex - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller;

Derived form adjective miotic₁