American English

Definition of ampoule noun from the Oxford Advanced American Dictionary

 

ampoule

 noun
(also ampule) noun
NAmE//ˈæmpyul//
 
, NAmE//‑pul//
 
 
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a small container, usually made of glass, containing a drug that will be used for an injection The drugs stolen include an ampoule of adrenaline which could kill if injected.
See the Oxford Advanced Learner's Dictionary entry: ampoule