pros·​the·​sis | \ präs-ˈthē-səs How to pronounce prosthesis (audio) , ˈpräs-thə- \
plural prostheses\ präs-​ˈthē-​ˌsēz How to pronounce prosthesis (audio) , ˈpräs-​thə-​ \

Definition of prosthesis

: an artificial device to replace or augment a missing or impaired part of the body

Examples of prosthesis in a Sentence

She was fitted with a prosthesis to replace her missing leg.
Recent Examples on the Web The stress of his nearly 265-pound frame on his prosthesis put too much pressure on the top of his leg. Jen Murphy, WSJ, 29 May 2021 Arceneaux is set to be the youngest American to visit space, and the first person with a prosthesis to journey into space. Francesca Street, CNN, 30 Apr. 2021 Often, insurance companies will only cover a basic prosthesis for walking, deeming cosmetic prostheses medically unnecessary. Meg Dunn, CNN, 14 Apr. 2021 Strands of matching hair donated by 10 to 12 people — adults can donate, too, as long as their hair has not been colored or chemically treated — are blended to make one prosthesis. Katy Read, Star Tribune, 16 Apr. 2021 Roe served in the Maryland Army National Guard in Desert Storm and has a prosthesis on his left leg. Chip Reid, Lauren Peller, CBS News, 15 Apr. 2021 But some patients might prefer a prosthesis that connects them to a computer without penetrating their brain. Kelly Servick, Science | AAAS, 22 Mar. 2021 Arceneaux, whose femur was replaced with an internal prosthesis during her battle with cancer, said her orthopedic surgeon put all sorts of limits on her — no skiing, no sky diving, no jumping on a trampoline. Jackie Wattles, CNN, 22 Feb. 2021 Besides being part of the first all-civilian crew to space, Arceneaux will also make history by being the first person with a prosthesis to go into orbit, according to St. Jude. Max Garland, USA TODAY, 23 Feb. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prosthesis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of prosthesis

circa 1900, in the meaning defined above

History and Etymology for prosthesis

New Latin, from Greek, addition, from prostithenai to add to, from pros- in addition to + tithenai to put — more at pros-, do

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Time Traveler for prosthesis

Time Traveler

The first known use of prosthesis was circa 1900

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Statistics for prosthesis

Last Updated

7 Jun 2021

Cite this Entry

“Prosthesis.” Dictionary, Merriam-Webster, Accessed 21 Jun. 2021.

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English Language Learners Definition of prosthesis

medical : an artificial device that replaces a missing or injured part of the body


pros·​the·​sis | \ präs-ˈthē-səs, ˈpräs-thə- How to pronounce prosthesis (audio) \
plural prostheses\ -​ˌsēz How to pronounce prosthesis (audio) \

Medical Definition of prosthesis

: an artificial device to replace or augment a missing or impaired part of the body a dental prosthesis silicone breast and limb prostheses

More from Merriam-Webster on prosthesis

Nglish: Translation of prosthesis for Spanish Speakers

Britannica English: Translation of prosthesis for Arabic Speakers Encyclopedia article about prosthesis


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