cement /səˈmɛnt/noun 5verb 5forms 4phrases 1 noun5 •A powdered substance produced by firing (calcining) calcium carbonate (limestone) and clay that develops strong cohesive properties when mixed with water. The main ingredient of concrete. •The paste-like substance resulting from mixing such a powder with water, or the rock-like substance that forms when it dries. •Any material with strong adhesive and cohesive properties such as binding agents, glues, grout. •(figurative) A bond of union; that which unites firmly, as persons in friendship or in society. •The layer of bone investing the root and neck of a tooth; cementum. verb5 •To affix with cement. •(figurative) To unite firmly or closely.For they have entertained cause enough To draw their swords: but how the fear of us May cement their divisions and bind up The petty difference, we yet not know. — 1606 •(figurative) To make permanent.[Dele] Alli’s ability to break forward from midfield was a prominent feature and the 19-year-old must have gone a long way to cementing his place in the team. — 2016 •To overlay or coat with cement. •(figurative) To repair.When neibors anger at a plea, / An' just as wud as wud can be, / How easy can the barley-bree / Cement the quarrel! — 1785 formscemented · cementing · cementeth · cements Phrases with cement cement togetherTo combine permanently, as with cement.