rectilinear
adjective
1. characterized by a straight line or lines
- rectilinear patterns in wallpaper
- the rectilinear propagation of light
Similar word(s): linear, rectilineal
Sentences with rectilinear as an adjective:
- The crankshaft and connecting rods of an engine convert the rectilinear motion of the pistons to rotary motion of the flywheel.