by Brian Bergen-Aurand Prosthesis: Noun. Originally from a grammatical concept “prosthetics,”  from the 1550s, “addition of a letter or syllable to a word,” from Late Latin, from Greek prosthesis “addition, application, attachment,” from prostithenai “add to,” from pros “to” + tithenai “to put, place, to set down as in a proposition.” Prosthesis in reference to … Continue reading →