ˌimˌplan.ˈtāshən, -laan-, -lȧn- noun
1. : the act or process of implanting or the state of being implanted: as
a. : the placement of the root of a tooth in an artificially prepared socket in the jawbone
b. in placental mammals : the process of attachment of the embryo to the maternal uterine wall
c. : experimental addition of tissue or other material to an intact embryo
d. : medical treatment by the insertion of an implant
2. : the spontaneous passage of cells especially of tumors to a new site with subsequent growth — compare metastasis