Meaning

adjective of or relating to prosthetics

adjective relating to or serving as a prosthesis

originFrom New Latin prostheticus, from Ancient Greek προσθετικός (prosthetikós, “adding; repletive; giving additional power”), from πρόσθεσις (prósthesis, “addition”), from προστίθημι (prostíthēmi, “I add”), from πρός (prós, “towards”) + τίθημι (títhēmi, “I place”). By surface analysis, prosth- + -etic.

Etymology from Wiktionary, CC BY-SA 3.0