Meaning & use

flexor

noun, adjective·Advancedtechnical

Last updated

UK/ˈflek.sə/
US/ˈflek.sɚ/

Meanings

  1. nouncountabletechnical

    A muscle that bends a joint or pulls a body part inward.

    Grammar: Countable: you can talk about one flexor or several flexors, and it is often used before another noun, as in flexor muscle.

    Patterns

    • the flexor muscles
    • a flexor of the wrist
    • flexor and extensor muscles

    The flexor muscles in your forearm let you curl your fingers into a fist.

    She pulled a flexor in her thigh while sprinting and could not straighten her leg properly.

    Doctors tested the flexors of his hand after the injury.

  2. adjectivebefore a nountechnical

    Relating to a muscle or tendon that bends a part of the body.

    Grammar: Used only before a noun, as in flexor tendon; it is not used after a verb.

    Patterns

    • flexor tendon
    • flexor muscle
    • flexor surface

    He needed surgery on a flexor tendon in his little finger.

    The flexor muscles of the forearm are deeper than the ones you can see.

Word forms

pluralflexors

Common combinations

flexor muscle
The flexor muscles of the forearm are used constantly when you type.
flexor tendon
A cut to the flexor tendon can make the finger impossible to bend.
hip flexor
Runners often stretch their hip flexors before a race.
flexor and extensor
The flexor and extensor muscles work as a pair to move the joint.

Synonyms and how they differ

bender
Very informal and rare for a muscle; it fits only in casual speech, not in medical writing.

Opposites

extensor

Word family

flex verb
to bend a joint or limb, especially as an exercise
flexion noun
the act of bending a joint, or the bent position itself
flexible adjective
able to bend easily without breaking

Commonly confused: flexor or flexer?

flexor vs flexer

Flexer is not a standard anatomy word; it can appear as a slang term or a brand name. For the muscle, always write flexor.

Practice

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