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circle

/ˈsɜɹkəl/ [ˈsɜː.kəɫ] [ˈsɝ.kəɫ]

Meanings

noun

Examples :

"The set of all points (x, y) such that (x − 1)2 + y2 = r2 is a circle of radius r around the point (1, 0)."