concentric

Pronunciation: /kənˈsɛn.tɹɪk/

The English word “concentric” has 2 meanings listed here.

adjective

Having a common center.
Of a motion, in the direction of contraction of a muscle. (e.g. the extension of the lower arm by means of the elbow joint while contracting the triceps and other elbow extensor muscles; closing of the jaw while flexing the masseter).

Etymology

From Middle English concentrik, from Middle French concentrique, from Medieval Latin concentricus, from Latin con- (“with, together”) + centrum (“circle, center”). Equivalent to con- + -centric. By surface analysis, con- + centre + -ic.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.