A powered exoskeleton is a mobile machine wearable over all or part of the human body, providing ergonomic structural support, and powered by a system of electric motors, pneumatics, levers, hydraulics or a combination of cybernetic technologies, allowing for sufficient limb movement, and providing increased strength, protection and endurance.

Arthropods are covered with a tough, resilient integument, cuticle or exoskeleton of chitin.