nonlinear


From The Collaborative International Dictionary of English v.0.48:

nonlinear \nonlinear\ adj.
   1. (Math.) Not depictable graphically as a straight line; not
      changing by a constant amount for each unit of time,
      distance, or other independent variable. Opposite of
      linear.
      [WordNet 1.5 +PJC]

   2. (Math.) Containing variables of greater than the first
      degree; -- of an equation. Opposite of linear.
      [PJC]

   3. (Physics) Represented by equations containing variables of
      greater than the first degree; -- of physical processes or
      relationships. Opposite of linear.
      [PJC]
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