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concentric

adjective
🔊/kənˈsentrɪk/
🔊/kənˈsentrɪk/
 (geometry几何)
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  1. (of circles圆) having the same centre同心的
    • concentric rings同心环
    • The revolving circle is concentric with the fixed outer circle.旋转圆与固定的外圆同心。
    Topics Colours and Shapesc2
    Oxford Collocations DictionaryConcentric is used with these nouns:
    • circle
    • ring
    See full entry
    Word Originlate Middle English: from Old French concentrique or medieval Latin concentricus, from con- ‘together’ + centrum ‘centre’.