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cement noun definition in Materials and properties topic from the Oxford Advanced Learner's Dictionary

cement

 noun: Materials and properties topic
1 a grey powder made by burning clay and lime that sets hard when it is mixed with water. Cement is used in building to stick bricks together and to make very hard surfaces. Use a mixture of one part cement to four parts sand.2 the hard substance that is formed when cement becomes dry and hard a floor of cement a cement floor

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