Characterized by a straight line or lines:
— Rectilinear patterns in wallpaper.
— The rectilinear propagation of light.

synoniem: rectilineal.

Roget 246: straight; rectilinear, rectilineal^†; direct, even, right, true, in a line; unbent, virgate^† etc. v.; undeviating, unturned, undistorted, unswerving; straight as an arrow etc. (direct) 278; inflexible etc. 323.    laser-straight; ramrod-straight.    ... meer laten zien

Roget 314: oscillating etc. v.; oscillatory, undulatory, pulsatory^†, libratory, rectilinear; vibratory, vibratile^†; pendulous.   

Pools: prostoliniowy