concentric

  1. Adjective.  (geometry) Having a common center.
  2. Adjective.  (physiology) (of a motion) in the direction of contraction of a muscle. (''E.g.'' extension of the lower arm via the elbow joint while contracting the triceps and other elbow extensor muscles; closing of the jaw while flexing the masseter).

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This entry was last updated on RefTopia from its source on 3/20/2012.