flexion
noun
flex·ion
ˈflek-shən 
1
: the act of flexing or bending
2
: a part bent : bend
4
a
: a bending movement around a joint in a limb (such as the knee or elbow) that decreases the angle between the bones of the limb at the joint compare extension sense 3b
b
: a forward raising of the arm or leg by a movement at the shoulder or hip joint
Examples of flexion in a Sentence
Recent Examples on the Web
Symptoms include weakness in hip flexion and a decreased range of motion.
—
Aubrey Bailey, Verywell Health, 22 July 2025
In the next phase, James’ knee is at the maximum point of flexion.
—Charlotte Harpur, New York Times, 10 July 2025
During this lowering—known as the eccentric phase—your glutes, along with your hamstrings, get stretched as your hips push back (a motion known as hip flexion).
—Christa Sgobba, SELF, 4 June 2025
In Azzurra, one finger (capable of flexion and extension movements, or two degrees of freedom) is driven by only one motor.
—IEEE Spectrum, 18 July 2013
See All Example Sentences for flexion
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Aubrey Bailey, Verywell Health, 22 July 2025
In the next phase, James’ knee is at the maximum point of flexion.
—Charlotte Harpur, New York Times, 10 July 2025
During this lowering—known as the eccentric phase—your glutes, along with your hamstrings, get stretched as your hips push back (a motion known as hip flexion).
—Christa Sgobba, SELF, 4 June 2025
In Azzurra, one finger (capable of flexion and extension movements, or two degrees of freedom) is driven by only one motor.
—IEEE Spectrum, 18 July 2013
See All Example Sentences for flexion
Cite this Entry
“Flexion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flexion. Accessed 29 Jul. 2025.
Copy CitationKids Definition
flexion
noun
flex·ion
ˈflek-shən
: a bending movement around a joint (as the knee or elbow) in an arm or leg that lessens the angle between bones of the arm or leg at the joint
also
: the resulting state
Medical Definition
flexion
noun
flex·ion
variants
also flection
1
: a bending movement around a joint in a limb (as the knee or elbow) that decreases the angle between the bones of the limb at the joint compare extension sense 2
2
: a forward raising of the arm or leg by a movement at the shoulder or hip joint
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