1. The science of biologic functions and mechanisms as applied to electronic chemistry; such as computers, employing various aspects of physics, mathematics, and chemistry; improving cybernetic engineering by reference to the organization of the vertebrate nervous system.
2. The science of applying the knowledge gained by studying the characteristics of living organisms to the formulation of nonorganic devices and techniques.
The definition information for bionics is provided by Stedman's. You can search our medical dictionary here.