1837 in grammar; 1902 in the surgical sense, from Latinized form of Greek prosthetikos "disposed to add," from prosthetas "added," verbal adjective of prostithenai "to put to, add to" (see prosthesis). Related: Prosthetically.
prosthetics pros·thet·ics (prŏs-thět'ĭks)
The branch of medicine or surgery that deals with the production and application of artificial body parts.
prosthetic pros·thet·ic (prŏs-thět'ĭk)
Serving as or relating to a prosthesis.
Of or relating to prosthetics.