Source : Webster's Revised Unabridged Dictionary (1913)

Kinetic \Ki*net"ic\, q. [Gr. ?, from ? to move.] (Physics)
   Moving or causing motion; motory; active, as opposed to
   latent.

   {Kinetic energy}. See {Energy}, n. 4.

Source : WordNet®

kinetic energy
     n : the mechanical energy that a body has by virtue of its
         motion [syn: {K.E.}]