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.
See also
Bimodal Distribution, Mode, Multimodal, Trimodal, Unimodal
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Cite this as:
Weisstein, Eric W. "Bimodal." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Bimodal.html