Dictionary.com
definitions

alloplast

[ăl′ə-plăst′]
n.
  1. A graft of an inert metal or plastic material.
  2. An inert foreign body used for transplantation into tissues.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.