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Adjective: bipolar  bI'pow-lu(r)
  1. Having two poles
    "The bipolar magnet had a north and south pole"
     
  2. Of or relating to manic depressive illness
    "She was diagnosed with bipolar disorder"
     
  3. Of, pertaining to, or occurring in both polar regions
    "the bipolar distribution of certain species"

See also: Janus-faced

Antonym: unipolar

Encyclopedia: Bipolar