Definition of flexor in English:


Line breaks: flex¦or
Pronunciation: /ˈflɛksə
(also flexor muscle)


  • 1A muscle whose contraction bends a limb or other part of the body. Often contrasted with extensor.
    More example sentences
    • It took 8 weeks for extensor muscle strength to return to normal; the flexor muscle groups generally recovered within 4 weeks.
    • This different insertion pattern of the regenerated tendon could explain how it acts mainly as a flexor muscle rather than as an internal rotator.
    • He was relieved when an MRI found only a strained flexor muscle.
  • 1.1Any of a number of specific muscles in the arm, hand, leg, or foot.
    More example sentences
    • Choose moves that also stretch your hip flexors, which will help you achieve a split.
    • There was a minor but consistent increase in knee flexor muscle bursts (amplitude and duration) during treadmill walking.
    • Maintaining good posture and stretching your hip flexors and hamstrings will help keep the strain off your lower back.

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