extensor

noun

ex·​ten·​sor ik-ˈsten(t)-sər 

: a muscle serving to extend a bodily part (such as a limb)

Examples of extensor in a Sentence

Recent Examples on the Web

Reverse Glider Lunge With Heel Raise The split squat or lunge is an exercise that increases hip and knee extensor muscle strength.8 This exercise adds a heel raise for an additional balance challenge. —Mallory Creveling, Health, 17 Sep. 2025

Deadlifts engage the glutes, hamstrings, and back extensors. —Aubrey Bailey, Verywell Health, 14 July 2025

According to the team, Crawford underwent successful surgery to reconstruct the stabilizing sheath of the extensor carpi ulnaris (ECU) in his right wrist. —Mac Cerullo, Boston Herald, 2 July 2025

Reliever Danny Coulombe, on the injured list with a left forearm extensor strain, is in the middle of a long toss program. —Betsy Helfand, Twin Cities, 31 May 2025

Word History

First Known Use

1615, in the meaning defined above

Rhymes for extensor

• condenser
• dispenser
• biosensor
• censer
• censor
• denser
• fencer
• sensor
• tensor

Kids Definition

extensor

noun

ex·​ten·​sor ik-ˈsten(t)-sər 

: a muscle serving to extend a bodily part (as a leg or arm)

Medical Definition

extensor

noun

ex·​ten·​sor ik-ˈsten(t)-sər  -sȯ(ə)r 

: a muscle serving to extend a bodily part (as a limb)

called also extensor muscle

compare flexor