Source : Webster's Revised Unabridged Dictionary (1913)

Implantation \Im`plan*ta"tion\, n. [Cf. F. implantation.]
   The act or process of implantating.

Source : WordNet®

implantation
     n 1: (embryology) the organic process whereby a fertilized egg
          becomes implanted in the lining of the uterus of
          placental mammals [syn: {nidation}]
     2: the act of planting or setting in the ground
     3: a surgical procedure that places something in the human
        body; "the implantation of radioactive pellets in the
        prostate gland"