Atropine

//ˈa.tɹə.piːn// noun

Definitions

Noun
  1. 1
    An alkaloid extracted from the plant deadly nightshade (Atropa belladonna) and other sources, such as the seeds of the thorn-apple. Though overdoses would be fatal it is used as a drug in medicine for its paralytic effects (e.g. in surgery to relax muscles, in dentistry to dry the mouth, in ophthalmology to dilate the pupils). countable, uncountable
  2. 2
    a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides wordnet

Etymology

From Latin Atropa (“genus of deadly nightshade”) + -ine.

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