English

Definition of concentric adjective from the Oxford Advanced Learner's Dictionary

 

concentric

 adjective
adjective
BrE BrE//kənˈsentrɪk//
 
; NAmE NAmE//kənˈsentrɪk//
 
(geometry)
 
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(of circles) having the same centre concentric rings The revolving circle is concentric with the fixed outer circle. Word Origin late Middle English: from Old French concentrique or medieval Latin concentricus, from con- ‘together’ + centrum ‘centre’.
See the Oxford Advanced American Dictionary entry: concentric