flexor

noun

flex·​or ˈflek-sər  -ˌsȯr 

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

Examples of flexor in a Sentence

Recent Examples on the Web

Sitting for long periods causes certain muscle groups to tighten, especially your hip flexors, hamstrings, and lower back muscles. —Jakob Roze, Health, 9 Jan. 2025

Weakened glutes from sitting, for example, can lead to stress on the knees and lower back; tired hip flexors can alter pelvic movement, leading to lower back pain. —Deborah Vankin, Los Angeles Times, 7 Jan. 2025

Not to mention, the one poor habit so many of us are guilty of: sitting all damn day, and often in a slumped posture, which puts pressure on your hip flexors and, yep, your pelvis. —Erica Sloan, SELF, 15 July 2024

Knee Muscles Walking engages the knee flexors and extensors.13 Hamstrings: The hamstrings are the primary knee flexors located in the back of the thighs. —Aubrey Bailey, Pt, Dpt, Cht, Verywell Health, 26 Sep. 2024

Word History

Etymology

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

Kids Definition

flexor

noun

flex·​or ˈflek-sər 

-ˌsȯ(ə)r

: a muscle that produces flexion

Medical Definition

flexor

noun

flex·​or ˈflek-sər  -ˌsȯ(ə)r 

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

called also flexor muscle

compare extensor