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English noun: miosis

1. miosis (process) (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)


Synonymsmeiosis, reduction division


Broader (hypernym)cell division, cellular division


Narrower (hyponym)nondisjunction


Part holonymanaphase, cytokinesis, karyokinesis, metaphase, prophase, segregation, telophase


Domain categorygenetic science, genetics

2. miosis (act) reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller


Synonymslight reflex, myosis, pupillary reflex


Broader (hypernym)inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex









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