rectilinear

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rectilinear

, rectilineal
1. in, moving in, or characterized by a straight line or lines
2. consisting of, bounded by, or formed by a straight line or lines

Rectilinear

Forming, formed by, or characterized by straight lines.

rectilinear

[¦rek·tə′lin·ē·ər]
(mathematics)
Consisting of or bounded by lines.