equilateral

[ee-kwuh-lat-er-uh l, ek-wuh-]
See more synonyms for equilateral on Thesaurus.com
noun
  1. a figure having all its sides equal.
  2. a side equivalent, or equal, to others.

Origin of equilateral

From the Late Latin word aequilaterālis, dating back to 1560–70. See equi-, lateral
Related formse·qui·lat·er·al·ly, adverbnon·e·qui·lat·er·al, adjectivenon·e·qui·lat·er·al·ly, adverbsub·e·qui·lat·er·al, adjectiveun·e·qui·lat·er·al, adjectiveun·e·qui·lat·er·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


Examples from the Web for equilateral

Contemporary Examples of equilateral

  • Equilateral can be read as a parable of the ways we blind ourselves through vanity, love, and greed.

    The Daily Beast logo
    The 2013 Novel of the Year Is…

    Nathaniel Rich

    December 30, 2013

  • The Khedive of Egypt persuades himself that the success of the equilateral will silence his local political rivals.

    The Daily Beast logo
    The 2013 Novel of the Year Is…

    Nathaniel Rich

    December 30, 2013

Historical Examples of equilateral


British Dictionary definitions for equilateral

equilateral

adjective
  1. having all sides of equal lengthan equilateral triangle
noun
  1. a geometric figure having all its sides of equal length
  2. a side that is equal in length to other sides
Derived Formsequilaterally, 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 equilateral
adj.

1560s, from Late Latin aequilateralis, from aequi- (see equal (adj.)) + lateralis (see lateral).

Online Etymology Dictionary, © 2010 Douglas Harper

equilateral in Science

equilateral

[ē′kwə-lătər-əl]
  1. Having all sides of equal length, as a triangle that is neither scalene nor isosceles.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.