mydriasis

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.

• IPA^(key): /mɪˈdɹaɪ ə sɪs/, /maɪ-/

mydriasis (countable and uncountable, plural mydriases)

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

• miosis

• anisocoria