1

a(1)

**:**of, relating to, resembling, or having a graph that is a line and especially a straight line

**:**straight

(2)

**:**involving a single dimension

b(1)

**:**of the first degree with respect to one or more variables

(2)

**:**of, relating to, based on, or being linear equations, linear differential equations, linear functions, linear transformations, or linear algebra

c(1)

**:**characterized by an emphasis on line

linear art

(2)

**:**composed of simply drawn lines with little attempt at pictorial representation

linear script

d

**:**consisting of a straight chain of atoms

a linear molecule

2

**:**elongated with nearly parallel sides

linear leaf

see leaf illustration
3

**:**having or being a response or output that is directly proportional to the input

4

**:**of, relating to, or based or depending on sequential development

linear thinking

a linear narrative

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Merriam-Webster unabridged
## Share