Source : Webster's Revised Unabridged Dictionary (1913)

Producer's rent \Producer's rent\ Progressive \Pro*gress"ive\,
   a. (U. S. Politics)
   Of or pertaining to the Progressive party.

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®

progressive
     adj 1: favoring or promoting progress; "progressive schools" [ant:
            {regressive}]
     2: favoring or promoting reform (often by government action)
        [syn: {reformist}, {reform-minded}]
     3: (of taxes) adjusted so that the rate increases as the amount
        increases [ant: {regressive}]
     4: gradually advancing in extent
     5: advancing in severity; "progressive paralysis"

progressive
     n 1: a tense of verbs used in describing action that is on-going
          [syn: {progressive tense}, {imperfect}, {imperfect tense},
           {continuous tense}]
     2: a person who favors a political philosophy of progress and
        reform and the protection of civil liberties [syn: {liberal}]
        [ant: {conservative}]