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English definition of “suppressor”

suppressor

noun [C]     /səˈpres.ər/ US  //
a thing or person that prevents something bad from happening: Plastic is a good weed suppressor (= a substance which stops them from growing).Preventing and impedingLimiting and restricting
(Definition of suppressor noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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