(Anatomy)a muscle whose contraction extends or straightens a limb or other part of the body (剖)伸肌。 常与 flexor 相对 ■any of a number of specific muscles in the arm, hand, leg, and foot 臂、手、腿和脚的某些肌肉
语源
early 18th cent.: from late Latin, from extens- 'stretched out', from the verb extendere (see extend)