Source : Webster's Revised Unabridged Dictionary (1913)

Consolidate \Con*sol"i*date\, a. [L. consolidatus, p. pr. of
   consolidare to make firm; con- + solidare to make firm;
   solidus solid. See {Solid}, and cf. {Consound}.]
   Formed into a solid mass; made firm; consolidated. [R.]

         A gentleman [should learn to ride] while he is tender
         and the brawns and sinews of his thighs not fully
         consolidate.                             --Elyot.

Consolidate \Con*sol"i*date\, v. t. [imp. & p. p.
   {Consolidated}; p. pr. & vb. n. {Consolidating}.]
   1. To make solid; to unite or press together into a compact
      mass; to harden or make dense and firm.

            He fixed and consolidated the earth.  --T. Burnet.

   2. To unite, as various particulars, into one mass or body;
      to bring together in close union; to combine; as, to
      consolidate the armies of the republic.

            Consolidating numbers into unity.     --Wordsworth.

   3. (Surg.) To unite by means of applications, as the parts of
      a broken bone, or the lips of a wound. [R.]

   Syn: To unite; combine; harden; compact; condense; compress.

Consolidate \Con*sol"i*date\, v. i.
   To grow firm and hard; to unite and become solid; as, moist
   clay consolidates by drying.

         In hurts and ulcers of the head, dryness maketh them
         more apt to consolidate.                 --Bacon.

Source : WordNet®

consolidate
     v 1: unite into one; "The companies consolidated"
     2: make firm or secure; strengthen; "consolidate one's gains";
        "consolidate one's hold on first place"
     3: bring together into a single whole or system; "The town and
        county schools are being consolidated"
     4: form into a solid mass or whole; "The mud had consolidated
        overnight"
     5: make or form into a solid or hardened mass; "consolidate
        fibers into boards"