1. a hard external covering that supports and protects the body of certain animals such as insects and crustaceans
Usage: biology
2. an external framework worn by a person to provide support or enhance physical capabilities
Usage: technology

Examples

• The beetle’s exoskeleton protects it from predators.
• Crabs must shed their exoskeleton as they grow larger.
• The lobster’s hard exoskeleton makes it difficult to extract the meat.
• Scientists are developing robotic exoskeletons to help paralyzed patients walk.
• The military tested an exoskeleton that allows soldiers to carry heavier loads.
• Unlike mammals, arthropods have an exoskeleton instead of internal bones.
• The exoskeleton of a grasshopper is made of a tough material called chitin.