mydriasis

Meanings

1. The condition of having abnormally large and dilated pupils due to illness or narcotics, particularly stimulants such as methamphetamine, cocaine, etc.

Etymology

From Latin mydriasis, from Ancient Greek μυδρίᾱσις (mudríāsis, “undue enlargement of the pupil”), from μύδρος (múdros, “mass of red hot material in a forge”), possibly because the pupil is particularly bright or sparkling when dilated, or because of the red eye effect when exposed to a flash of light.