Meaning of “ammunition” in the English Dictionary

british dictionary

"ammunition" in British English

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ammunitionnoun [ U ]

uk /ˌæm.jəˈnɪʃ.ən/ us /ˌæm.jəˈnɪʃ.ən/

informal ammo, uk /ˈæm.əʊ/ us /-oʊ/ objects that can be shot from a weapon, such as bullets or bombs:

a good supply of ammunition
a shortage of ammunition

facts that can be used to support an argument:

His bad behaviour provided plenty of ammunition for his opponents.

(Definition of “ammunition” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"ammunition" in American English

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ammunitionnoun [ U ]

us /ˌæm·jəˈnɪʃ·ən/ infml ammo, /ˈæm·oʊ/

objects such as bullets and bombs that can be shot from a weapon

Ammunition is also information used to attack someone or to support an argument:

The president’s endorsement of the crime bill has deprived his opponents of ammunition to paint him as soft on crime.

(Definition of “ammunition” from the Cambridge Academic Content Dictionary © Cambridge University Press)