or rec·ti·lin·e·al



forming a straight line.
formed by straight lines.
characterized by straight lines.
moving in a straight line.

Nearby words

  1. rectifiable,
  2. rectification,
  3. rectified spirit,
  4. rectifier,
  5. rectify,
  6. rectirostral,
  7. rectitis,
  8. rectitude,
  9. rectitudinous,
  10. recto

Origin of rectilinear

1650–60; < Late Latin rēctilīne(us) (rēcti- recti- + līne(a) line1 + -us adj. suffix) + -ar1

Related formsrec·ti·lin·e·ar·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rectilinear

British Dictionary definitions for rectilinear




in, moving in, or characterized by a straight line or linesthe rectilinear propagation of light
consisting of, bounded by, or formed by a straight line or lines
Derived Formsrectilinearly or rectilineally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for rectilinear



"forming a straight line," 1650s, with -ar + rectiline (1560s), from Late Latin rectilineus, from rectus "straight" (see right (adj.1)) + linea "line" (see line (n.)). Related: Rectilineal (1640s).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for rectilinear



Relating to, consisting of, or moving in a straight line or lines.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.