flex·​or ˈflek-sər How to pronounce flexor (audio)
: a muscle serving to bend a body part (such as a limb)

Examples of flexor in a Sentence

Recent Examples on the Web In both kinds of splits, tension is divided between your hamstrings, your hip flexors, and your knees, according to studies from the Strength and Conditioning Journal and RadioGraphics. Women's Health, 11 July 2023 For example, sitting for hours at a time can shorten your hip flexors and weaken your hip muscles, explains Donohoe. Kells McPhillips, Outside Online, 3 Apr. 2023 Half Kneeling Lunge for Hip Flexors Performing this stretch will help open up your quadriceps, hip flexors, and psoas, Donohoe says. Kells McPhillips, Outside Online, 3 Apr. 2023 That’s why, to take one example, tight quads and hip flexors in runners can cause knee pain. Kylie Gilbert, Glamour, 21 Aug. 2023 Some exercises to counteract this posture problem are stretching the quads, hip flexors, lumbar, and chest while strengthening the glutes, hamstrings, and core. Fiorella Valdesolo, Vogue, 16 Aug. 2023 Instead of treadmill work, Brie will opt for something like sled pushes, which is a full-body workout that targets your quads, glutes, hip flexors, calves, hamstrings, core, triceps, chest, and shoulders, per Healthline. Jacqueline Tempera, Women's Health, 10 Aug. 2023 Julie Washington reports that a regular stretching routine helps maintain flexibility, increase circulation to muscles and eliminate muscle tightness in quadriceps, hamstrings, and hip flexors that often cause low back pain. Cliff Pinckard, cleveland, 18 July 2023 More than a month since he was placed on the injured list with a hip flexor strain, center fielder Kiké Hernández does not appear close to a return to the Red Sox lineup. Globe Staff, BostonGlobe.com, 10 July 2022 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flexor.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


borrowed from New Latin, from Latin flectere "to cause to go in a different direction, bend, curve" (of uncertain origin) + -tor, agent suffix

First Known Use

1615, in the meaning defined above

Time Traveler
The first known use of flexor was in 1615

Dictionary Entries Near flexor

Cite this Entry

“Flexor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flexor. Accessed 6 Dec. 2023.

Kids Definition


flex·​or ˈflek-sər How to pronounce flexor (audio)
: a muscle that produces flexion

Medical Definition


: a muscle serving to bend a body part (as a limb)

called also flexor muscle

compare extensor
Last Updated: - Updated example sentences
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