pros·​the·​sis | \ präs-ˈthē-səs How to pronounce prosthesis (audio) , ˈpräs-thə- \
plural prostheses\ präs-​ˈthē-​ˌsēz How to pronounce prostheses (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 Some services that might remain temporarily unavailable include alterations, beauty makeovers, skincare treatments and specialized brow​, prosthesis and bra-fitting services, the company said. Russ Wiles, azcentral, "Nordstrom to permanently close Chandler Fashion Center store over coronavirus disruptions," 7 May 2020 For one, all electronics are contained within the prosthesis, which removes the need for external equipment, such as wires, electrodes, or batteries. Shafaq Zia, STAT, "Mind-controlled prosthetic arm enables patients to feel the objects they grip," 30 Apr. 2020 That signal is extremely faint, resulting in clunky control of the prosthesis—the wearer may need to flex their shoulder to get the device’s thumb to move, for instance. Matt Simon, Wired, "A Deft Robotic Hand That’d Make Luke Skywalker Proud," 4 Mar. 2020 Apart from providing a potential evolution for vision prostheses, Mojo says its contact lenses will help industrial workers access real-time information, which can increase productivity or compliance far better than a vision-blocking headset. Courtney Linder, Popular Mechanics, "These Smart Contact Lenses Deliver AR Tech Straight to Your Eyeballs," 17 Jan. 2020 Wires planted directly into these nerves can capture electrical signals to control a prosthesis. Kelly Servick, Science | AAAS, "Minimuscles let amputees control a robot hand with their minds," 4 Mar. 2020 When active, the prosthesis stimulated the jellyfish’s muscles with a regular electronic pulse. Sophie Bushwick, Scientific American, "Cyborg Jellyfish Could One Day Explore the Ocean," 29 Jan. 2020 Professor Nirva Saint-Louis, who was injured in the earthquake, puts on a prosthesis at her home in Port-au-Prince in January 2020. Caitlin Hu, CNN, "Ten years after an earthquake devastated their country, many Haitians have little hope," 12 Jan. 2020 The electrical signal changes when a person’s arm sweats, swells, or slips around in the socket of the prosthesis. Kelly Servick, Science | AAAS, "Minimuscles let amputees control a robot hand with their minds," 4 Mar. 2020

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.

See More

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

Keep scrolling for more

Learn More about prosthesis

Time Traveler for prosthesis

Time Traveler

The first known use of prosthesis was circa 1900

See more words from the same year

Statistics for prosthesis

Cite this Entry

“Prosthesis.” Dictionary, Merriam-Webster, Accessed 4 Aug. 2020.

Keep scrolling for more

More Definitions for prosthesis


How to pronounce prosthesis (audio)

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 prostheses (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

Keep scrolling for more

More from Merriam-Webster on prosthesis

Rhyming Dictionary: Words that rhyme with prosthesis

Spanish Central: Translation of prosthesis

Nglish: Translation of prosthesis for Spanish Speakers

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

Comments on prosthesis

What made you want to look up prosthesis? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

July 2020 Words of the Day Quiz

  • papercraft sunset
  • Which is a synonym of mien?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!