Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of extensor is as below...

Extensor :: Extensor (n.) A muscle which serves to extend or straighten any part of the body, as an arm or a finger; -- opposed to flexor..

Antagonist :: Antagonist (n.) A muscle which acts in opposition to another; as a flexor, which bends a part, is the antagonist of an extensor, which extends it..

Triceps :: Triceps (n.) A muscle having three heads; specif., the great extensor of the forearm, arising by three heads and inserted into the olecranon at the elbow..

Flexor :: Flexor (n.) A muscle which bends or flexes any part; as, the flexors of the arm or the hand; -- opposed to extensor..

Quadriceps :: Quadriceps (n.) The great extensor muscle of the knee, divided above into four parts which unite in a single tendon at the knee..

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