Extensor

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Extensor \Ex*ten"sor\, n. [L., one who stretches. See {Extend}.]
     (Anat.)
     A muscle which serves to extend or straighten any part of the
     body, as an arm or a finger; -- opposed to {flexor}.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  extensor
       n : a skeletal muscle whose contraction extends or stretches a
           body part [syn: {extensor muscle}] [ant: {flexor muscle}]