concentric

UK: /kənˈsɛntrɪk/ US: /kənˈsɛntrɪk/ ,(kən sen′trik)

WordReference Random House Learner's Dictionary of American English © 2026

con•cen•tric /kənˈsɛntrɪk/   adj. 

1. Mathematics (esp. of circles or spheres) having a common center.

con•cen•tri•cal•ly, adv. 
con•cen•tric•i•ty /ˌkɑnsənˈtrɪsɪti/  n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026

con•cen•tric  (kən sen′trik), adj. 

1. Mathematics having a common center, as circles or spheres.

Also, con•cen′tri•cal. 

• Medieval Latin concentricus. See con-, center, -ic
• 1350–1400; Middle English consentrik

con•cen′tri•cal•ly, adv. 
con•cen•tric•i•ty  (kon′sən tris′i tē, -sen-), n. 

Collins Concise English Dictionary © HarperCollins Publishers::

concentric / kənˈsɛntrɪk/, concentrical / kənˈsɛntrɪkəl/ adjective

1. having a common centre: concentric circles
   Compare eccentric3

Etymology: 14th Century: from Medieval Latin concentricus, from Latin com- same + centrum centre

conˈcentrically adverb