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Definition of "prosthesis" [pros•the•sis]

  • An artificial device used to replace a missing body part, such as a limb, tooth, eye, or heart valve. (noun)
  • Replacement of a missing body part with such a device. (noun)
  • Linguistics Prothesis. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "prosthesis" in a sentence
  • "It will take at least two or three years before scientists try to replicate the experiment with a more long-term prosthesis, the experts said."
  • "Conceived for people who feel insecure about their social skills, the prosthesis is a rigid, circular apparatus that forces a facial expression -- almost a grimace -- onto its wearer."
  • "Wired News has an interesting article about the quest to create an artificial brain prosthesis."