mydriasis

Definition of Mydriasis in English :

1. mydriasis

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

WordNet Lexical Database for English. Princeton University. 2010.

Mydriasis

noun

abnormal dilation of the pupil of the eye, produced by drugs, coma, etc

noun

prolonged or excessive dilatation of the pupil of the eye, as the result of disease or the administration of a drug

n.

Dilation of the pupil of the eye, especially when excessive or prolonged, usually as a result of trauma, a medical disorder, or a drug.