Rectilinear

[,rektɪ'lɪnɪə] or ['rɛktə'lɪnɪɚ]

(adj.) characterized by a straight line or lines; 'rectilinear patterns in wallpaper'; 'the rectilinear propagation of light' .

Typed by Carla--From WordNet

(a.) Straight; consisting of a straight line or lines; bounded by straight lines; as, a rectineal angle; a rectilinear figure or course.

Checked by Angelique

a. Right-lined.

Editor: William

SYN:Straight, undeviating, right-lined, point-blank

ANT:Curvilinear, deflexed, winding, tortuous, curved, serpentine

Checked by Barlow