AskDefine | Define concentric

Dictionary Definition

concentric adj : having a common center; "concentric rings" [syn: concentrical, homocentric] [ant: eccentric]

User Contributed Dictionary



  1. Having a common center.
  2. (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)


Having a common center
in the direction of contraction of a muscle

Extensive Definition

Concentric objects share the same center, axis or origin with one inside the other. Circles, tubes, cylindrical shafts, disks, and spheres may be concentric. Concentric objects do not necessarily have the same radius.
Concentric cable is a cable type used in TN-C-S earthing systems where the combined neutral and earth core completely surrounds the live core(s). This minimises the risk of completely cutting through the combined neutral and earth without first completely cutting through the live cores.
Concentric contraction is a contraction in which there is a shortening of the muscle.

External links

concentric in German: Konzentrizität
concentric in Estonian: Kontsentrilised objektid
concentric in Norwegian: Konsentrisk
concentric in Slovenian: Koncentričnost
concentric in Swedish: Koncentrisk
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