noun · 2 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˈa.tɹə.piːn/
Received-Pronunciation:/ˈa.tɹəp.ɪn/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ˈæ.tɹəˌpin/
1
noun
Meaning 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).
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 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
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Etymology tree Latin Atropa Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English atropine From Latin Atropa (“genus of deadly nightshade”) + English -ine.
Across languages
Translations
17 source translations are retained for this English entry.
Arabic:
أَتْرُوبِن
(ʔatrūbin)
— alkaloid extracted from the plant deadly nightshade
Catalan:
atropina
— alkaloid extracted from the plant deadly nightshade
Chinese Mandarin:
阿托品
(ātuōpǐn)
— alkaloid extracted from the plant deadly nightshade
Esperanto:
atropino
— alkaloid extracted from the plant deadly nightshade
Finnish:
atropiini
— alkaloid extracted from the plant deadly nightshade
French:
atropine
— alkaloid extracted from the plant deadly nightshade
German:
Atropin
— alkaloid extracted from the plant deadly nightshade
Greek:
ατροπίνη
(atropíni)
— alkaloid extracted from the plant deadly nightshade
Indonesian:
atropina
— alkaloid extracted from the plant deadly nightshade
Italian:
atropina
— alkaloid extracted from the plant deadly nightshade
Malay:
atropina
— alkaloid extracted from the plant deadly nightshade
Polish:
atropina
— alkaloid extracted from the plant deadly nightshade
Portuguese:
atropina
— alkaloid extracted from the plant deadly nightshade
Romanian:
atropină
— alkaloid extracted from the plant deadly nightshade
Russian:
атропи́н
(atropín)
— alkaloid extracted from the plant deadly nightshade
Spanish:
atropina
— alkaloid extracted from the plant deadly nightshade
Swedish:
atropin
— alkaloid extracted from the plant deadly nightshade
