1. Application of biological principles to the study and design of engineering systems, especially electronic systems.
2. A blend of biology and electronics.

• Biology: The science of life and of living organisms, including their structure, function, growth, origin, evolution, and distribution. It includes botany and zoology and all their subdivisions.
• Electronics: Electronic devices and systems or the application of the conduction of electric charges in various media, including vacuums, gaseous media, and semiconductors.