linear meaning and definition

LINEAR adjective

Definition of linear (adjective)

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