/ Thesaurus / P Synonyms of portland cement Find synonyms for: Noun1. hydraulic cement, Portland cement, cementusage: a cement that hardens under water; made by heating limestone and clay in a kiln and pulverizing the resultWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language