Ce*ment" (s&ebreve;*m&ebreve;nt" or s&ebreve;m"&ebreve;nt), n. [OF. cement, ciment, F. ciment, fr. L. caementum a rough, unhewn stone, pieces or chips of marble, from which mortar was made, contr. fr. caedimentum, fr. caedere to cut, prob. akin to scindere to cleave, and to E. shed, v. t.] 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. "The cement of our love."

5. (Anat.) The layer of bone investing the root and neck of a tooth; -- called also cementum.

Ce*ment" (?), v. t. [imp. & p. p. Cemented; p. pr. & vb. n. Cementing.] [Cf. F. cimenter. See Cement, n.] 1. To unite or cause to adhere by means of a cement. Bp. Burnet.

2. To unite firmly or closely. Shak.

3. To overlay or coat with cement; as, to cement a cellar bottom.

Ce*ment", v. i. To become cemented or firmly united; to cohere. S. Sharp.

• A powdered substance that develops strong adhesive properties when mixed with water.
  
• The paste-like substance resulting from mixing such a powder with water.
  
• Any material with strong adhesive properties.
  
• (count noun) A particular type or brand of cement.
  
• To affix with cement.
  
• (figurative) To ensure an outcome.