Source : Webster's Revised Unabridged Dictionary (1913)

Condense \Con*dense"\, v. i.
   1. To become more compact; to be reduced into a denser form.

            Nitrous acid is gaseous at ordinary temperatures,
            but condenses into a very volatile liquid at the
            zero of Fahrenheit.                   --H. Spencer.

   2. (Chem.)
      (a) To combine or unite (as two chemical substances) with
          or without separation of some unimportant side
          products.
      (b) To undergo polymerization.

Condense \Con*dense"\, v. t. [imp. & p. p. {Condensed}; p. pr. &
   vb. n. {Condensing}.] [L. condensare; con- + densare to make
   thick or dense, densus thick, dense: cf. F. condenser. See
   {Dense}, and cf. {Condensate}.]
   1. To make more close, compact, or dense; to compress or
      concentrate into a smaller compass; to consolidate; to
      abridge; to epitomize.

            In what shape they choose, Dilated or condensed,
            bright or obscure.                    --Milton.

            The secret course pursued at Brussels and at Madrid
            may be condensed into the usual formula,
            dissimulation, procrastination, and again
            dissimulation.                        --Motley.

   2. (Chem. & Physics) To reduce into another and denser form,
      as by cold or pressure; as, to condense gas into a liquid
      form, or steam into water.

   {Condensed milk}, milk reduced to the consistence of very
      thick cream by evaporation (usually with addition of
      sugar) for preservation and transportation.

   {Condensing engine}, a steam engine in which the steam is
      condensed after having exerted its force on the piston.

   Syn: To compress; contract; crowd; thicken; concentrate;
        abridge; epitomize; reduce.

Condense \Con*dense"\, a. [L. condensus.]
   Condensed; compact; dense. [R.]

         The huge condense bodies of planets.     --Bentley.

Source : WordNet®

condense
     v 1: undergo condensation; change from a gaseous to a liquid
          state and fall in drops; "water condenses"; "The acid
          distills at a specific temperature" [syn: {distill}, {distil}]
     2: make more concise; "condense the contents of a book into a
        summary" [syn: {digest}, {concentrate}]
     3: remove water from; "condense the milk"
     4: cause a gas or vapor to change into a liquid; "The cold air
        condensed the steam"
     5: become more compact or concentrated; "Her feelings
        condensed"
     6: develop due to condensation; "All our planets condensed out
        of the same material"
     7: compress or concentrate; "Congress condensed the three-year
        plan into a six-month plan" [syn: {concentrate}, {contract}]