Definition of 'linear'

Adjective

1. designating or involving an equation whose terms are of the first degree
      Synonyms: additive
      Antonyms: nonlinear
2. of or in or along or relating to a line; involving a single dimension; "a linear measurement"
      Synonyms: one-dimensional
      Antonyms: planar two-dimensional cubic three-dimensional
3. of a circuit or device having an output that is proportional to the input; "analogue device"; "linear amplifier"
      Synonyms: analogue analog
      Antonyms: digital
4. of a leaf shape; long and narrow
      Synonyms: elongate
5. measured lengthwise; "cost of lumber per running foot"
      Synonyms: running

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