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English definition of “concrete”

concrete

noun [U]     /ˈkɒŋ.kriːt/ US  /ˈkɑːn-/
B2 a very hard building material made by mixing together cement, sand, small stones, and water: reinforced concrete a concrete floor/path a grey concrete buildingBuilding materials
(Definition of concrete noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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