prosthesis Meaning, Definition & Usage

  1. noun corrective consisting of a replacement for a part of the body
    prosthetic device.

WordNet

Pros"the*sis noun
Etymology
L., fr. Gr. an addition, fr. to put to, to add; to + to put, place.
Definitions
  1. (Surg.) 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.
  2. (Gram.) The prefixing of one or more letters to the beginning of a word, as in beloved.

Webster 1913