Source : Webster's Revised Unabridged Dictionary (1913)

Cognition \Cog*ni"tion\, n. [L. cognitio, fr. cognoscere,
   cognitum, to become acquainted with, to know; co- + noscere,
   gnoscere, to get a knowledge of. See {Know}, v. t.]
   1. The act of knowing; knowledge; perception.

            I will not be myself nor have cognation Of what I
            feel: I am all patience.              --Shak.

   2. That which is known.

Source : WordNet®

cognition
     n : the psychological result of perception and learning and
         reasoning [syn: {knowledge}, {noesis}]