Source : Webster's Revised Unabridged Dictionary (1913)

Self-fertilization \Self`-fer`ti*li*za"tion\, n. (Bot.)
   The fertilization of a flower by pollen from the same flower
   and without outer aid; autogamy.

Source : WordNet®

self-fertilization
     n : fertilization by the union of male and female gametes from
         the same individual [syn: {self-fertilisation}] [ant: {cross-fertilization}]