American English

Definition of circular adjective from the Oxford Advanced American Dictionary



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  1. 1shaped like a circle; round a circular building
  2. 2moving around in a circle a circular tour of the city Using small circular movements, massage the muscles on either side of the spine.
  3. 3(of an argument or a theory) using an idea or a statement to prove something that is then used to prove the idea or statement at the beginning
  4. circularity
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  5. NAmE//ˌsərkyəˈlærət̮i//
    noun [uncountable] There is a dangerous circularity about this argument.
See the Oxford Advanced Learner's Dictionary entry: circular