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English definition of “medium”

medium

noun [C] (SUBSTANCE)    /ˈmiː.di.əm/
a substance that something grows in, lives in, or moves through: Compost is an excellent growing medioum.Mixing and mixturesVariety and mixturesConnecting and combiningGroups and collections of things
(Definition of medium noun (SUBSTANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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