from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having or exhibiting two contrasting modes or forms: "American supermarket shopping shows bimodal behavior—careful, nutritious choices mixed with salty, high-fat snack foods” ( Sheryl Julian).
  • adj. Having two distinct statistical modes.
  • adj. Designed for operation on either railroads or highways. Used of vehicles.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having two modes or forms
  • adj. Having two modes (local maxima)

from the GNU version of the Collaborative International Dictionary of English

  • adj. having or occurring with two modes{9}; having two maxima; -- of a curve or distribution.

from The Century Dictionary and Cyclopedia

  • Having two modes. In a table of frequencies the mode is the most frequent measure. If the curve of frequencies has two maxima it is called bimodal.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of a distribution; having or occurring with two modes


Composition: bi- + modal. (Wiktionary)



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