A curve which intersects some straight line in an infinity of points (but for which not every point lies on this curve).
Transcendental Curve
See also
Algebraic CurveExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Transcendental Curve." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/TranscendentalCurve.html