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2 ENTRIES FOUND:

portland cement

noun port·land cement \ˈprt-lən(d)-\

Definition of PORTLAND CEMENT

:  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 of PORTLAND CEMENT

Isle of Portland, England; from its resemblance to a limestone found there
First Known Use: 1824

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