variants: or less commonly portland cement
Definition of Portland cement
: a cement (see cement entry 1 sense 1b) that sets under water and that is made by finely pulverizing the clinker produced by heating a mixture of clay and limestone or similar materials to a high temperature just short of fusing Drexel engineers have found a way to improve upon ordinary Portland cement …, the glue that's bonded much of the world's construction since the late 1800s. — Swiss National Science Foundation Once the joints are open, refill them with a dry mix of stone dust and portland cement, mixed at a ratio of 1 part cement to 6 parts dust. — This Old House
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
You're (Probably) Saying It Wrong
18 words even you might be mispronouncing
Great Big List of Beautiful & Useless Words
Along with their degrees of usefulness
12 French Phrases from Downton Abbey
Many of us have an 'idée fixe'
Rare and Amusing Insults, Volume 2
Sometimes a 'cacafuego' can be a real 'slubberdeg...
Ask the Editors