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equilateral

[ee-kwuh-lat-er-uh l, ek-wuh-] /ˌi kwəˈlæt ər əl, ˌɛk wə-/
adjective
1.
having all the sides equal:
an equilateral triangle.
noun
2.
a figure having all its sides equal.
3.
a side equivalent, or equal, to others.
Origin of equilateral
1560-1570
1560-70; < Late Latin aequilaterālis. See equi-, lateral
Related forms
equilaterally, adverb
nonequilateral, adjective
nonequilaterally, adverb
subequilateral, adjective
unequilateral, adjective
unequilaterally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for equilateral

equilateral

/ˌiːkwɪˈlætərəl/
adjective
1.
having all sides of equal length: an equilateral triangle
noun
2.
a geometric figure having all its sides of equal length
3.
a side that is equal in length to other sides
Derived Forms
equilaterally, 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
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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
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equilateral in Science
equilateral
  (ē'kwə-lāt'ər-əl)   
Having all sides of equal length, as a triangle that is neither scalene nor isosceles.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Word Value for equilateral

20
23
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