1. Able to withstand knocks and shocks without being damaged

Encyclopedia: Shockproof

• external respiration
• external storage
• external-combustion engine
• externalisation
• externalise
• externalism
• externality
• externalization
• externalize
• externally
• exteroception
• exteroceptive
• exteroceptor
• exterritorial
• extinct
• extinction
• extinction angle
• extinguish
• extinguishable
• extinguished
• extinguisher
• extinguishing
• extinguishment
• extirpable
• extirpate