— prosthetic /pros thet"ik/ , adj. — prosthetically , adv.
/pros thee"sis/ for 1; /pros"theuh sis/ for 2 , n. , pl. prostheses /-seez/ for 1; /-seez'/ for 2 .
1. a device, either external or implanted, that substitutes for or supplements a missing or defective part of the body.
2. Gram. , Prosody. the addition of one or more sounds or syllables to a word or line of verse, esp. at the beginning.
[ 1545-55; prósthesis a putting to, addition, equiv. to prós to + thésis a placing; see THESIS ]