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matter

noun [U] (SUBSTANCE)
 
 
/ˈmæt.ər/ US  /ˈmæt̬.ɚ/

Definition

physical substance in the universe: Some scientists believe that there is about ten times as much matter in the universe as astronomers have observed.The state of matter
(Definition of matter noun (SUBSTANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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