Source : Webster's Revised Unabridged Dictionary (1913)

Absurdity \Ab*surd"i*ty\ (-[i^]*t[y^]), n.; pl. {Absurdities}
   (-t[i^]z). [L. absurditas: cf. F. absurdite.]
   1. The quality of being absurd or inconsistent with obvious
      truth, reason, or sound judgment. ``The absurdity of the
      actual idea of an infinite number.'' --Locke.

   2. That which is absurd; an absurd action; a logical
      contradiction.

            His travels were full of absurdities. --Johnson.

Source : WordNet®

absurdity
     n 1: a message whose content is at variance with reason [syn: {absurdness},
           {ridiculousness}]
     2: a ludicrous folly; "the crowd laughed at the absurdity of
        the clown's behavior" [syn: {fatuity}, {fatuousness}, {silliness}]