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or concentrical

[kuh n-sen-trik] /kənˈsɛn trɪk/
having a common center, as circles or spheres.
Origin of concentric
1350-1400; Middle English consentrik < Medieval Latin concentricus. See con-, center, -ic
Related forms
concentrically, adverb
[kon-suh n-tris-i-tee, -sen-] /ˌkɒn sənˈtrɪs ɪ ti, -sɛn-/ (Show IPA),
nonconcentric, adjective
nonconcentrical, adjective
nonconcentrically, adverb
nonconcentricity, noun
unconcentric, adjective
unconcentrically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for concentrically
Historical Examples
  • These additions are first, a disk n n, concentrically fixed to the main axis A B of the engine.

  • The outer surface of the shell is concentrically grooved; the beaks are smooth.

    The Sea-beach at Ebb-tide Augusta Foote Arnold
  • The shield in the first two is granulated, in the other concentrically striated.

    Our British Snails John William Horsley
  • A strong solution of caustic ammonia produces a concentrically laminated or fissured appearance in them.

    Parasites T. Spencer Cobbold
  • Shelves lined with red crepe paper which was now faded and torn and concentrically spotted.

    Main Street Sinclair Lewis
  • Suppose a threepenny-piece and a half-crown placed alongside of each other, concentrically, with a common pivot.

    Boating W. B. Woodgate
  • The eyeball consists of concentrically arranged coats and of refracting media inclosed in them.

    Special Report on Diseases of Cattle U.S. Department of Agriculture
  • This results in the formation of concentrically laminated masses known as cell nests.

    Manual of Surgery Alexis Thomson and Alexander Miles
  • It gradually assumes a nearly spherical form; and is then composed of concentrically arranged layers (fig. 280, hl).

  • They eventually become detached from the parent cell, around which they are concentrically arranged.

British Dictionary definitions for concentrically


having a common centre: concentric circles Compare eccentric (sense 3)
Derived Forms
concentrically, adverb
concentricity (ˌkɒnsənˈtrɪsɪtɪ) noun
Word Origin
C14: from Medieval Latin concentricus, from Latin com- same + centrumcentre
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for concentrically



c.1400, from Middle French concentrique, from Medieval Latin concentricus, from com- "together" (see com-) + centrum "circle, center" (see center (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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concentrically in Medicine

concentric con·cen·tric (kən-sěn'trĭk)
Having a common center or center point, as of circles.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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