extensor
noun
ex·ten·sor ik-ˈsten(t)-sər 
: a muscle serving to extend a bodily part (such as a limb)
Example Sentences
Recent Examples on the Web Extension of the wrist, meanwhile, hits up the extensor carpi radialis. 
Philip Ellis, Men's Health, 30 July 2022 Seabold left Friday’s game in the top of the third inning with what the team termed right forearm extensor tightness. Globe Staff, BostonGlobe.com, 8 July 2022 The wrist is also bent, causing structures like the wrist and finger extensor and flexor tendons to have to work harder under excess strain. Esther Smith, Outside Online, 8 Aug. 2021 Without proper coaching cues, however, many runners do not extend the hips properly and incorporate mostly the helper hip extensor muscles, like the hamstrings, whilst not activating the Gluteus Maximus at all. Jon-erik Kawamoto, Outside Online, 11 Aug. 2020 Jin had previously damaged the tendons in his left index finger and underwent surgery to repair its extensor, which Big Hit informed ARMY about in March. Hannah Dailey, Billboard, 8 Apr. 2022 Generally, pain on the top of the foot is an inflammation of the tendons that straighten the toes, which run along the top of the foot and are called extensor tendons. Jeff Gaudette, Outside Online, 12 Oct. 2021 Thus, the clinical name for this injury is extensor tendonitis. Jeff Gaudette, Outside Online, 12 Oct. 2021 The problem is, this creates tightness in your extensor muscles (think triceps, quads, and back extensors), which can impact your form and increase your risk of injury. Pam Moore, SELF, 25 Aug. 2021 See More
Philip Ellis, Men's Health, 30 July 2022 Seabold left Friday’s game in the top of the third inning with what the team termed right forearm extensor tightness. Globe Staff, BostonGlobe.com, 8 July 2022 The wrist is also bent, causing structures like the wrist and finger extensor and flexor tendons to have to work harder under excess strain. Esther Smith, Outside Online, 8 Aug. 2021 Without proper coaching cues, however, many runners do not extend the hips properly and incorporate mostly the helper hip extensor muscles, like the hamstrings, whilst not activating the Gluteus Maximus at all. Jon-erik Kawamoto, Outside Online, 11 Aug. 2020 Jin had previously damaged the tendons in his left index finger and underwent surgery to repair its extensor, which Big Hit informed ARMY about in March. Hannah Dailey, Billboard, 8 Apr. 2022 Generally, pain on the top of the foot is an inflammation of the tendons that straighten the toes, which run along the top of the foot and are called extensor tendons. Jeff Gaudette, Outside Online, 12 Oct. 2021 Thus, the clinical name for this injury is extensor tendonitis. Jeff Gaudette, Outside Online, 12 Oct. 2021 The problem is, this creates tightness in your extensor muscles (think triceps, quads, and back extensors), which can impact your form and increase your risk of injury. Pam Moore, SELF, 25 Aug. 2021 See More Word History
First Known Use
1615, in the meaning defined above
Medical Definition
extensor
noun
ex·ten·sor ik-ˈsten(t)-sər -sȯ(ə)r
-sȯ(ə)r : a muscle serving to extend a bodily part (as a limb)
called also extensor muscle
compare flexor