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English definition of “decomposer”

decomposer

noun [C] uk   /ˌdiː.kəmˈpəʊz.ər/ us    /ˈpoʊz.ɚ/ specialized
an organism such as a bacterium or fungus that makes dead plant and animal material decayBacteria, moulds, germs and viruses
(Definition of decomposer from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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