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English definition of “depressant”

depressant

noun [C] uk   /dɪˈpres.ənt/ us  
a drug that slows the rate of the body's functions: Alcohol is a depressant.
depressant
adjective uk   us  
These drugs have a depressant effect.
(Definition of depressant from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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