hyperbole meaning
If you actually meant hyperbole, the definition is: exaggerated statements or claims not meant to be taken literally.
Since this is a math forum, there's a possibility that you misspelled hyperbola, in which case the definition is: (from Webster) a plane curve generated by a point so moving that the difference of the distances from two fixed points is a constant. This seems difficult to visualize, so an example would be the curve of y = 1/x. Take y = 1/x to desmos.com graphing calculator to see it.
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