prothesis

noun

proth·​e·​sis ˈprä-thə-səs 

plural protheses ˈprä-thə-ˌsēz 

: the addition of a sound to the beginning of a word (as in Old French estat—whence English estate—from Latin status)

prothetic

prä-ˈthe-tik 

adjective

Word History

Etymology

Late Latin, alteration of prosthesis, from Greek, literally, addition — more at prosthesis

First Known Use

circa 1550, in the meaning defined above

Medical Definition

prothesis

noun

proth·​e·​sis ˈpräth-ə-səs 

plural protheses -ˌsēz 

: prosthesis

prothetic

prä-ˈthet-ik 

adjective