\Ce*ment"\ (s[e^]*m[e^]nt" or s[e^]m"[e^]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}.
{Hydraulic cement}. See under {Hydraulic}.

\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.