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English definition of “agent”

agent

noun [C] (CAUSE)    /ˈeɪ.dʒənt/
a person or thing that produces a particular effect or change: a powerful cleaning agent a raising agent for cakes a clotting agentliterary He was the agent of their destruction.Causing things to happen
(Definition of agent noun (CAUSE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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