circular
US /ˈsɝː.kjə.lɚ/
UK /ˈsɝː.kjə.lɚ/
1.
having the form of a circle; round
:
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The table was circular, allowing everyone to see each other easily.
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The dancers formed a circular pattern on the stage.
2.
of an argument or a line of reasoning) in which the conclusion is assumed in the premise
:
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His argument was circular, as he used the conclusion to support his initial claim.
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The debate fell into a circular trap, repeating the same points without progress.