The Collaborative International Dictionary of English v.0.48:

Integrate \In"te*grate\, v. t. [imp. & p. p. Integrated; p.
   pr. & vb. n. Integrating.] [L. integratus, p. p. of
   integrare to make whole, renew: cf. F. int['e]grer. See
   Integer, Entire.]
   [1913 Webster]
   1. To form into one whole; to make entire; to complete; to
      renew; to restore; to perfect. "That conquest rounded and
      integrated the glorious empire." --De Quincey.
      [1913 Webster]

            Two distinct substances, the soul and body, go to
            compound and integrate the man.       --South.
      [1913 Webster]

   2. To indicate the whole of; to give the sum or total of; as,
      an integrating anemometer, one that indicates or registers
      the entire action of the wind in a given time.
      [1913 Webster]

   3. (Math.) To subject to the operation of integration; to
      find the integral of.
      [1913 Webster]

WordNet (r) 3.0 (2006):

integrate
    v 1: make into a whole or make part of a whole; "She
         incorporated his suggestions into her proposal" [syn:
         integrate, incorporate] [ant: disintegrate]
    2: open (a place) to members of all races and ethnic groups;
       "This school is completely desegregated" [syn: desegregate,
       integrate, mix] [ant: segregate]
    3: become one; become integrated; "The students at this school
       integrate immediately, despite their different backgrounds"
    4: calculate the integral of; calculate by integration [ant:
       differentiate]