Portland cement

/ˌpɔrtlənd səˌmɛnt/
IPA guide

Other forms: Portland cements

Definitions of Portland cement
  1. noun
    a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the result
    synonyms: hydraulic cement
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    type of:
    cement
    a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar
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