Prosthesis

·noun The prefixing of one or more letters to the beginning of a word, as in beloved.

II. Prosthesis ·noun The addition to the human body of some artificial part, to replace one that is wanting, as a log or an eye;

— called also prothesis.

prosthesis
prosthĕsis, is, f., = πρόσθεσις, and prŏthĕsis, is, f., = πρόθεσις, a grammatical figure consisting ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.