| NOUN | act | light reflex, pupillary reflex, miosis, myosis | reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller |
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| Meaning | reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller. | |
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| Synonyms | pupillary reflex, miosis, myosis | |
| Broader | reflex, reflex response, reflex action, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction | An automatic instinctive unlearned reaction to a stimulus |
| Spanish | miosis | |
| Catalan | miosi | |
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