A curve or path that maintains equal curvature or rate of change at all points.
From Latin 'aequus' (equal) + 'curvus' (curved). This mathematical term emerged from differential geometry and curve analysis.
A circle is the ultimate equicurve—no matter where you measure, the bend is exactly the same; that's why wheels are round rather than oval-shaped, because equal curvature means perfectly smooth rolling.
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