concentric

• coencentric

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

• Rhymes: -ɛntɹɪk

concentric (comparative more concentric, superlative most concentric)

1. (geometry) Having a common center.
   • 2020 August 26, Tim Dunn, “Great railway bores of our time!”, in Rail, page 45:

     Seven huge concentric semi-circular rings of stone surround the northern end, and quite rightly are Grade 2-listed by conservation body Historic England.

2. (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).

   Antonym: eccentric. Concentric and eccentric movements are collectively referred to as isotonic (with motion), the antonym of which is isometric (without motion).

• (antonym(s) of “physiology”): eccentric

• concentricity
• semiconcentric

• Japanese: コンセント (konsento)
• Korean: 콘센트 (konsenteu)

•   concentric on Wikipedia.Wikipedia
• “concentric”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.

Borrowed from French concentrique.

concentric m or n (feminine singular concentrică, masculine plural concentrici, feminine and neuter plural concentrice)

1. concentric