from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Moving in, consisting of, bounded by, or characterized by a straight line or lines: following a rectilinear path; rectilinear patterns in wallpaper.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. In a straight line.
- adj. Formed from straight lines.
from The Century Dictionary and Cyclopedia
- Straight-lined; bounded by straight lines; consisting of a straight line or of straight lines; straight: as, a rectilinear figure or course. Also rectilineal.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. characterized by a straight line or lines
From Late Latin rēctilīneus : Latin rēctus, right; see reg- in Indo-European roots + Latin līnea, line; see line1.(American Heritage® Dictionary of the English Language, Fourth Edition)
From post-Classical Latin; either from rectilīneāris or from rectilīneus (whence rectiline) + -ar, in both cases ultimately deriving from rectus ("straight") + līnea ("line"). (Wiktionary)