mydriasis

Meaning

Noun

• The condition of having abnormally large and dilated pupils due to disease or drugs, particularly stimulants such as (meth)amphetamines, cocaine, etc.

Related

Opposite words

• miosis

Origin

• From Latin mydriasis, from Ancient Greek μυδρίᾱσις, from μύδρος, 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.