Portland cement

== English == === Alternative forms === portland cement === Etymology From its resemblance to limestone from Portland in Dorset. === === Noun === Portland cement (countable and uncountable, plural Portland cements) A finely-ground powder made by heating and pulverizing limestone and clay. ==== Hypernyms ==== ==== Coordinate terms ==== ==== Derived terms ==== ==== Related terms ==== ==== Translations ====