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English definition of “substrate”

substrate

noun [C] uk   /ˈsʌb.streɪt/ specialized us  
biology a substance or surface that an organism grows and lives on and is supported bySurfaces of objectsEdges and extremities of objects chemistry a substance that an enzyme (= chemical made by living cells) acts on to produce a chemical reactionChemistry - general words
(Definition of substrate from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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