| NOUN | substance | Portland cement, hydraulic cement | a cement that hardens under water |
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| Meaning | A cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result. | |
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| Synonym | hydraulic cement | |
| Broader | cement | A building material that is a powder made of a mixture of calcined limestone and clay |
| Spanish | cemento hidráulico, cemento portland | |
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