Found 1 items, similar to miosis.
English → English (WordNet) Definition: miosis miosis n 1: (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 division] 2: reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller [syn: light reflex, pupillary reflex , myosis] [also: mioses (pl)]