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English definition of “substrate”

substrate

noun [C]     /ˈsʌb.streɪt/ specialized
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 noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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