1. (

• implantation ,
• nidation

) (embryology) the organic process whereby a fertilized egg becomes implanted in the lining of the uterus of placental mammals ;

2. (

• implantation

) the act of planting or setting in the ground ;

3. (

• implantation ,

) a surgical procedure that places something in the human body; "the implantation of radioactive pellets in the prostate gland" ;