Exoskeleton - Definition and More from the Free Merriam-Webster Dictionary

exo·skel·e·ton noun \ ˌ ek-sō-ˈ ske-lə-tən\ Definition of EXOSKELETON 1: an external supportive covering of an animal (as an arthropod) 2: bony or horny parts of a vertebrate produced from epidermal tissues 3: an artificial external supporting str

www.merriam-webster.com