a muscle that extends or straightens some part of the body, esp. a flexed arm or leg
Origin of extensorLate Latin extensor, stretcher ; from Classical Latin extensus: see extensible
A muscle that extends or straightens a limb or body part.
Origin of extensorNew Latin ext&emacron;nsor, from Latin ext&emacron;nsus, past participle of extendere, to stretch out; see extend.
- (anatomy) A muscle whose contraction extends or straightens a limb or body part.