miosis
(noun)
noun
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)
Similar word(s): meiosis
Definition categories: process
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
Similar word(s): myosis
Definition categories: act, reflex
Sentences with miosis as a noun:
- Horner's syndrome consists of miosis, eyelid ptosis and absent forehead sweating.