Possessing two modes. The term bimodal distribution, which refers to a distribution having two local maxima (as opposed to two equal most common values) is a slight corruption of this definition.
Bimodal
See also
Bimodal Distribution, Mode, Multimodal, Trimodal, UnimodalExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Bimodal." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Bimodal.html