Source : Webster's Revised Unabridged Dictionary (1913)

Advance \Ad*vance"\, v. t. [imp. & p. p. {Advanced}; p. pr. &
   vb. n. {Advancing}(#).] [OE. avancen, avauncen, F. avancer,
   fr. a supposed LL. abantiare; ab + ante (F. avant) before.
   The spelling with d was a mistake, a- being supposed to be
   fr. L. ad. See {Avaunt}.]
   1. To bring forward; to move towards the van or front; to
      make to go on.

   2. To raise; to elevate. [Archaic]

            They . . . advanced their eyelids.    --Shak.

   3. To raise to a higher rank; to promote.

            Ahasueres . . . advanced him, and set his seat above
            all the princes.                      --Esther iii.
                                                  1.

   4. To accelerate the growth or progress; to further; to
      forward; to help on; to aid; to heighten; as, to advance
      the ripening of fruit; to advance one's interests.

   5. To bring to view or notice; to offer or propose; to show;
      as, to advance an argument.

            Some ne'er advance a judgment of their own. --Pope.

   6. To make earlier, as an event or date; to hasten.

   7. To furnish, as money or other value, before it becomes
      due, or in aid of an enterprise; to supply beforehand; as,
      a merchant advances money on a contract or on goods
      consigned to him.

   8. To raise to a higher point; to enhance; to raise in rate;
      as, to advance the price of goods.

   9. To extol; to laud. [Obs.]

            Greatly advancing his gay chivalry.   --Spenser.

   Syn: To raise; elevate; exalt; aggrandize; improve; heighten;
        accelerate; allege; adduce; assign.

Source : WordNet®

advancing
     adj 1: moving ahead or toward the front; "advancing armies" [ant: {retreating}]
     2: moving forward [syn: {forward}, {forward-moving}]