(adj) :
having a common center; (of a motion) in the direction of contraction of a muscle. (E.g. extension of the lower arm while flexing the tricep; closing of the jaw while flexing the masseter). (Antonym: Eccentric)
(adj) :
having a common center; (of a motion) in the direction of contraction of a muscle. (E.g. extension of the lower arm while flexing the tricep; closing of the jaw while flexing the masseter). (Antonym: Eccentric)