Word

mydriasis, n.
(mydriases)

reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs
<noun.act>

mydriasis

semantic pointers

hypernym

dilation, dilatation reflex, reflex response, reflex action, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction