Source : Webster's Revised Unabridged Dictionary (1913)

Inflation \In*fla"tion\, n. [L. inflatio: cf. F. inflation.]
   1. The act or process of inflating, or the state of being
      inflated, as with air or gas; distention; expansion;
      enlargement. --Boyle.

   2. The state of being puffed up, as with pride; conceit;
      vanity. --B. Jonson.

   3. Undue expansion or increase, from overissue; -- said of
      currency. [U.S.]

Source : WordNet®

inflation
     n 1: a general and progressive increase in prices; "in inflation
          everything gets more valuable except money" [syn: {rising
          prices}] [ant: {deflation}, {disinflation}]
     2: (cosmology) a brief exponential expansion of the universe
        (faster than the speed of light) postulated to have
        occurred shortly after the big bang
     3: lack of elegance as a consequence of being pompous and
        puffed up with vanity [syn: {ostentation}, {ostentatiousness},
         {pomposity}, {pompousness}, {pretentiousness}, {splashiness}]
     4: the act of filling something with air [ant: {deflation}]