What do a.m. and p.m. stand for?


[rek-tl-in-ee-er] /ˌrɛk tlˈɪn i ər/
forming a straight line.
formed by straight lines.
characterized by straight lines.
moving in a straight line.
Origin of rectilinear
1650-60; < Late Latin rēctilīne(us) (rēcti- recti- + līne(a) line1 + -us adj. suffix) + -ar1
Related forms
rectilinearly, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for rectilinear
  • Neither followed the rectilinear path set out for them by their parents.
  • Her capsule would preserve artifacts in two rectilinear containers, encased in a resin figure resembling a swan.
  • His studio is one of two elegant rectilinear buildings-the other is his house-in a large, walled, lushly gardened compound.
  • The terminal is a stucco-covered masonry building composed of several flat-roofed, rectilinear blocks arranged symmetrically.
  • Fixed problem with pick on transformed rectilinear grids.
  • The computations are divided into two groups depending on whether the output arrays are in list form or in rectilinear grid form.
  • The balcony and a side facing gable roof gives the home a dominant rectilinear character.
British Dictionary definitions for rectilinear


in, moving in, or characterized by a straight line or lines: the rectilinear propagation of light
consisting of, bounded by, or formed by a straight line or lines
Derived Forms
rectilinearly, 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
Cite This Source
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
Cite This Source
rectilinear in Science
Relating to, consisting of, or moving in a straight line or lines.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for rectilinear

Few English speakers likely know this word

Word Value for rectilinear

Scrabble Words With Friends