Source : Webster's Revised Unabridged Dictionary (1913)

Procreation \Pro`cre*a"tion\, n. [F. procr['e]ation, L,
   procreatio.]
   The act of begetting; generation and production of young.
   --South.

Source : WordNet®

procreation
     n : the sexual activity of conceiving and bearing offspring
         [syn: {reproduction}, {breeding}, {facts of life}]