portland cement

noun port·land cement \ˈpȯrt-lən(d)-\

Definition of portland cement

  1. :  a hydraulic cement made by finely pulverizing the clinker produced by calcining to incipient fusion a mixture of clay and limestone or similar materials

Origin and Etymology of portland cement

Isle of Portland, England; from its resemblance to a limestone found there

First Known Use: 1824

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capable of being understood in two ways

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