Source : Webster's Revised Unabridged Dictionary (1913)

Progressive \Pro*gress"ive\, a. [Cf. F. progressif.]
   1. Moving forward; proceeding onward; advancing; evincing
      progress; increasing; as, progressive motion or course; --
      opposed to retrograde.

   2. Improving; as, art is in a progressive state.

   {Progressive euchre} or {whist}, a way of playing at card
      parties, by which after every game, the losers at the
      first table go to the last table, and the winners at all
      the tables, except the first, move up to the next table.
      

   {Progressive muscular atrophy} (Med.), a nervous disorder
      characterized by continuous atrophy of the muscles. --
      {Pro*gress"ive*ly}, adv. -- {Pro*gress"ive*ness}, n.

Source : WordNet®

progressively
     adv : advancing in amount or intensity; "she became increasingly
           depressed" [syn: {increasingly}, {more and more}]