Pro·duc·tive a.
  1. Having the quality or power of producing; yielding or furnishing results; as, productive soil; productive enterprises; productive labor, that which increases the number or amount of products.
  2. Bringing into being; causing to exist; producing; originative; as, an age productive of great men; a spirit productive of heroic achievements.
     And kindle with thy own productive fire.   --Dryden.
     This is turning nobility into a principle of virtue, and making it productive of merit.   --Spectator.
  3. Producing, or able to produce, in large measure; fertile; profitable.
  -- Pro*duc*tive*ly, adv. -- Pro*duc*tive*ness, n.
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  productiveness
       n : the quality of being productive or having the power to
           produce [syn: productivity] [ant: unproductiveness]