'bimodal' definitions:

Definition of 'bimodal'

From: WordNet
adjective
Of a distribution; having or occurring with two modes [ant: unimodal]

Definition of 'bimodal'

From: GCIDE
  • bimodal \bimodal\ adj. (Statistics) having or occurring with two modes[9]; having two maxima; -- of a curve or distribution. unimodal [WordNet 1.5]