1. 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.
2. Portland cement.
3. concrete.
4. A substance that hardens to act as an adhesive; glue.
5. something that serves to bind or unite: "custom was in early days the cement of society” ( Walter Bagehot).
6. geology A chemically precipitated substance that binds particles of clastic rocks.
7. dentistry A substance used for filling cavities or anchoring crowns, inlays, or other restorations.
8. variant of cementum.
9. to bind with or as if with cement.
10. to cover or coat with cement.
11. to become cemented.
12. in cement firmly settled or determined; unalterable: the administration's position on taxes was set in cement despite the unfavorable public response.

1. A powdered substance that develops strong adhesive properties when mixed with water.
2. the paste-like substance resulting from mixing such a powder with water.
3. any material with strong adhesive properties.
4. A particular type or brand of cement.
5. to affix with cement.
6. to ensure an outcome.

1. any substance used for making bodies adhere to each other, as mortar, glue, etc.
2. A kind of calcined limestone, or a calcined mixture of clay and lime, for making mortar which will harden under water.
3. the powder used in cementation. see cementation, n., 2.
4. bond of union; that which unites firmly, as persons in friendship, or men in society.
5. the layer of bone investing the root and neck of a tooth; -- called also cementum.
6. to become cemented or firmly united; to cohere.
7. to unite or cause to adhere by means of a cement.
8. to unite firmly or closely.
9. to overlay or coat with cement.

1. to unite by cement, as by mortar which hardens, or by other matter that produces cohesion of bodies.
2. figuratively, to unite morally or socially in close or firm union.
3. to unite or become solid; unite and cohere.
4. any composition which at one temperature or one degree of moisture is plastic and at another is tenacious.
5. specifically A kind of mortar which sets or hardens under water: hence often called hydraulic cement.
6. A name sometimes given by placer and hydraulic miners to any rather firmly compacted mass of detrital auriferous material.
7. in anatomy, the cortical substance which forms the outer crust of a tooth from the point where the enamel terminates to the apex of the root, resembling bone in anatomical structure and chemical composition. also called cementum. see cut under tooth.
8. in zoology, a substance which cements or glues, as the secretion by which a barnacle adheres.
9. figuratively, bond of union; that which firmly unites persons or interests.
10. A compound made of pitch, brick-dust, plaster of paris, etc., used by chasers and other artificers to put under their work that it may lie solid and firm, for the better receiving of the impression made by the punches and other tools.
11. A cement for securing rubber rings or plates to metal or wood. it consists of a solution of shellac in ten times its own weight of strong ammonia, left for a considerable time to soften without heat. also called caoutchouc cement.

1. a building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar
2. a specialized bony substance covering the root of a tooth
3. make fast as if with cement
4. concrete pavement is sometimes referred to as cement
5. cover or coat with cement
6. any of various materials used by dentists to fill cavities in teeth
7. something that hardens to act as adhesive material
8. bind or join with or as if with cement