# Definition of linear

**linear**Adjective Having the form of a line; straight.**linear**Adjective Of or relating to lines.**linear**Adjective Made in a step-by-step, logical manner.**linear**Adjective Long and narrow, with nearly parallel sides.**linear**Adjective Of or relating to a class of polynomial of the form y = a.x + b.**linear**Adjective A type of length measurement involving only one spatial dimension.