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triangular

[trahy-ang-gyuh-ler] /traɪˈæŋ gyə lər/
adjective
1.
pertaining to or having the form of a triangle; three-cornered.
2.
having a triangle as base or cross section:
a triangular prism.
3.
comprising three parts or elements; triple.
4.
pertaining to or involving a group of three, as three persons, parties, or things.
Origin
1535-1545
1535-45; < Latin triangulāris, equivalent to triangul(um) triangle + -āris -ar1
Related forms
triangularity
[trahy-ang-gyuh-lar-i-tee] /traɪˌæŋ gyəˈlær ɪ ti/ (Show IPA),
noun
triangularly, adverb
subtriangular, adjective
subtriangularity, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for triangularly

triangular

/traɪˈæŋɡjʊlə/
adjective
1.
Also trigonal. of, shaped like, or relating to a triangle; having three corners or sides
2.
of or involving three participants, pieces, or units
3.
(maths) having a base shaped like a triangle
Derived Forms
triangularity (traɪˌæŋɡjʊˈlærɪtɪ) noun
triangularly, 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 triangularly

triangular

adj.

1540s, from Late Latin triangularis, from triangulum (see triangle).

Online Etymology Dictionary, © 2010 Douglas Harper
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