mydriasis

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English[edit]

Pupil dilated for examination by ophthalmologist.

Etymology[edit]

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.

Pronunciation[edit]

  • IPA(key): /mɪˈdraɪ ə sɪs/, /maɪ-/

Noun[edit]

mydriasis ‎(plural mydriases)

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

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