1
: of, relating to, or being a prosthesis
a prosthetic limb
prosthetic devices
These researchers will develop ways to connect prostheses more soundly to the bone, coordinate brain signals with prosthetic movement, and create properly rotating artificial joints.—Sheela Raman
Similar prevention is recommended if you have leaky, prolapsed, or prosthetic heart valves.—Consumer Reports
also : of or relating to prosthetics
prosthetic research
2
: of, relating to, or constituting a nonprotein group of a conjugated protein
covalently bound prosthetic groups
a heme prosthetic group

Examples of prosthetic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The docuseries needed a capable actress that, with 90 minutes of hair and makeup (and one prosthetic tooth), could kind of look like Wuornos. — Tony Maglio, HollywoodReporter, 30 Sep. 2026 After suffering serious injuries in a car accident, lifelong fan Steve Prater asked doctors to create a prosthetic eye dedicated to his favorite team. — Daniel Wine, CNN Money, 30 Sep. 2026 The authors see uses for SWANS well beyond a rat’s hind legs, from drug delivery to prosthetic limbs. — Peter Hall, Scientific American, 29 Sep. 2026 Prosthetic applications remain years away The team hopes to strengthen the sensor’s electrical output enough to stimulate the nervous system directly, potentially allowing sensory information from a prosthetic limb to reach the brain. — Kaif Shaikh, Interesting Engineering, 29 Sep. 2026 See All Example Sentences for prosthetic

Word History

First Known Use

1872, in the meaning defined at sense 1

Time Traveler
The first known use of prosthetic was in 1872

Browse Nearby Words

Cite this Entry

“Prosthetic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prosthetic. Accessed 7 Oct. 2026.

Medical Definition

prosthetic

adjective
1
: of, relating to, or being a prosthesis
a prosthetic device
prosthetic limbs
also : of or relating to prosthetics
prosthetic research
2
: of, relating to, or constituting a nonprotein group of a conjugated protein
Love words? Need even more definitions?

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

More from Merriam-Webster