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English definition of “siding”

siding

noun [U] (MATERIAL)    /ˈsaɪ.dɪŋ/ US
material that covers the surface of the outer walls of a building, usually in sloping layers: vinyl/aluminum/wood sidingBuilding materialsWalls and parts of walls
(Definition of siding noun (MATERIAL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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