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rectilinear

American  
[rek-tl-in-ee-er] / ˌrɛk tlˈɪn i ər /
Or rectilineal

adjective

  1. forming a straight line.

  2. formed by straight lines.

  3. characterized by straight lines.

  4. moving in a straight line.

rectilinear British  
/ ˌrɛktɪˈlɪnɪə /

adjective

  1. in, moving in, or characterized by a straight line or lines

    the rectilinear propagation of light

  2. consisting of, bounded by, or formed by a straight line or lines

"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
rectilinear Scientific  
/ rĕk′tə-lĭn′ē-ər /

  1. Relating to, consisting of, or moving in a straight line or lines.

Other Word Forms

  • rectilinearly adverb

Etymology

Origin of rectilinear

1650–60; < Late Latin rēctilīne ( us ) ( rēcti- recti- + līne ( a ) line 1 + -us adj. suffix) + -ar 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.