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Definition of flexion

flexion

/ˈflɛk.ʃən/
flex · ion

Plural:flexions
•
Adjective:flexional
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flexion Lexical Profile

flexion Game Scores & Validity

• noun

1

The action of bending a limb or joint, especially so as to decrease the angle between the bones or parts involved.

Example

"The physical therapist measured the patient's knee flexion to track her recovery after surgery."


2

A bent or curved part, state, or fold.

Example

"The subtle flexion in the metal rod indicated where the heaviest load had been placed."


3

The modification of a word to express different grammatical categories such as tense, case, voice, aspect, person, number, gender, and mood; inflection.

Example

"Old English relied heavily on noun and verb flexion to indicate grammatical relationships within a sentence."

Synonyms
View all synonyms for flexion
Antonyms
View all antonyms for flexion

Word Nuance & Usage

While 'flection' is an accepted variant for general bending, 'flexion' is the overwhelmingly preferred spelling in anatomy, kinesiology, and physical therapy to describe the bending of a joint.

• Rhymes for flexion

Word Origin & Etymology

Borrowed in the late 16th century from Latin flexio, meaning 'a bending or turning,' derived from the verb flectere ('to bend').

Cite this Entry


Wordmom. (2026). Definition of Flexion. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/flexion
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