In the field of bioengineering, biofunctionalisation (or biofunctionalization) is the modification of a material to have biological function and/or stimulus, whether permanent or temporary while at the same time be biologically compatibile.
Various types of medical implants are designed to biofunctionalize so that they replace or repair a defective biological function and are accepted by the host organism.
References
Biofunctionalisation Wikipedia(Text) CC BY-SA