A signal sampled at a frequency higher than the Nyquist frequency is said to be oversampled times, where the oversampling ratio is defined as
Oversampling
See also
Nyquist Frequency, Nyquist SamplingExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Oversampling." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Oversampling.html