ce·ment (s?-m?nt?)n.1. a. A building material made by grinding calcined limestone and clay to a fine powder, which can be mixed with water and poured to set as a solid mass or used as an ingredient in making mortar or concrete.b. Portland cement.c. Concrete.2. A substance that hardens to act as an adhesive; glue.3. Something that serves to bind or unite: “Custom was in early days the cement of society” (Walter Bagehot).4. Geology A chemically precipitated substance that binds particles of clastic rocks.5. Dentistry A substance used for filling cavities or anchoring crowns, inlays, or other restorations.6. Variant of cementum.v. ce·ment·ed, ce·ment·ing, ce·ments v.tr.1. To bind with or as if with cement.2. To cover or coat with cement.v.intr. To become cemented.Idiom: in cement Firmly settled or determined; unalterable: The administration’s position on taxes was set in cement despite the unfavorable public response.[Middle English, from Old French ciment, from Latin caementum, rough-cut stone, rubble used in making concrete, from caedere, to cut; see ka?-id- in Indo-European roots.]ce·ment?er n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.cement (s??m?nt) n1. (Building) a fine grey powder made of a mixture of calcined limestone and clay, used with water and sand to make mortar, or with water, sand, and aggregate, to make concrete2. a binder, glue, or adhesive3. something that unites or joins; bond4. (Dentistry) dentistry any of various materials used in filling teeth5. (Geological Science) mineral matter, such as silica and calcite, that binds together particles of rock, bones, etc, to form a solid mass of sedimentary rock6. (Anatomy) another word for cementumvb (tr) 7. to reinforce or consolidate: once a friendship is cemented it will last for life. 8. to join, bind, or glue together with or as if with cement9. (Building) to coat or cover with cement[C13: from Old French ciment, from Latin caementum stone from the quarry, from caedere to hew] ce?menter nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ce?ment (s??m?nt) n. 1. any of various calcined mixtures of clay and limestone, usu. mixed with water and sand, gravel, etc., to form concrete, that are used as a building material. 2. any of various soft, sticky substances that dry hard or stonelike, used esp. for mending broken objects or for making things adhere. 3. the compact groundmass surrounding and binding together the fragments of clastic rocks. 4. anything that binds or unites. 5. a. a hardening, adhesive, plastic substance, used in the repair of teeth. b. cementum. v.t. 6. to unite by or as if by cement: an experience that cemented our friendship. 7. to coat or cover with cement. v.i. 8. to become cemented; cohere. [1250?1300; ciment