triangular

adjective tri·an·gu·lar \ trī-ˈaŋ-gyə-lər \

Updated on: 26 Apr 2018

Definition of triangular

1 a : of, relating to, or having the form of a triangle

a triangular plot of land

b : having a triangular base or principal surface

a triangular table

a triangular pyramid

2 a (1) : of, relating to, or involving three elements

a triangular agreement

(2) of a military group : based primarily on three units

b : of or relating to a love triangle

—

triangularity

play \(ˌ)trī-ˌaŋ-gyə-ˈla-rə-tē\ noun

—

triangularly

play \trī-ˈaŋ-gyə-lər-lē\ adverb

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Recent Examples of triangular from the Web

Both are pit vipers and have triangular heads and fangs.

— christina tkacik, baltimoresun.com, "First copperhead snakebite in Maryland this year is reported," 19 Apr. 2018
Looking sexier than ever, EmRata stunned on the red carpet in a sparkling black sequin gown which featured a triangular cutout that showed off her belly button and hip bone.

— lauren alexis fisher, Harper's BAZAAR, "Emily Ratajkowski Channeled The Early 2000s in This Belly Button-Baring Gown," 18 Apr. 2018
Never one to shy away from a bold beauty statement, Bella went all-out with her look with triangular designs adorning each eye as well as her chest, giving a flash-tattoo effect.

— avery matera, Teen Vogue, "Bella Thorne and Cardi B Wear Crystal Beauty Looks at Coachella 2018," 16 Apr. 2018
In fact, only three members from Jefferson County live in ZIP codes that aren't in a triangular wedge that goes from the Ohio River down to Interstate 64, east of downtown.

— joseph gerth, The Courier-Journal, "Something doesn’t feel right about David Jones’ group of Louisville powerbrokers | Joe Gerth," 2 Feb. 2018
The endless pier: Redondo's unique triangular pier, which is actually the second iteration of the landmark, still anchors a lively dining and entertainment district.

— scott garner, latimes.com, "Neighborhood Spotlight: Redondo Beach, though pricey, is not quite a South Bay A-lister," 6 Apr. 2018
First off, a triangular section of hair that would typically be hidden was lightened — this was done purposely for the bottom to pop out dramatically when hair moves.

— wendy sy, Allure, "This Peekaboo Dye Job Was Inspired by the Feather of a Red-Tailed Hawk," 2 Apr. 2018
The hotel is on a site known as Block One, a triangular patch across Third Street from where the Giants will be developing their Mission Rock project, a 28-acre office and residential project.

— j.k. dineen, San Francisco Chronicle, "Groundbreaking for SF hotel marks milestone for Mission Bay," 31 Mar. 2018
His father required a triangular badge from the police to cross the border, something which could take an hour at busy times.

— The Economist, "Twenty years after a peace deal the mood is sour in Northern Ireland," 28 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'triangular.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of triangular

Middle English trianguler, from Late Latin triangularis, from Latin triangulum

NEW! Time Traveler

First Known Use: 14th century

in the meaning defined at sense 1a

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TRIANGULAR Defined for English Language Learners

triangular

adjective

Definition of triangular for English Language Learners

: shaped like a triangle
: involving three people, groups, or things

TRIANGULAR Defined for Kids

triangular

adjective tri·an·gu·lar \ trī-ˈaŋ-gyə-lər \

Definition of triangular for Students

1 : having three angles, sides, or corners

a triangular sign

2 : of, relating to, or involving three parts or persons

Medical Dictionary

triangular

noun tri·an·gu·lar \ trī-ˈaŋ-gyə-lər \

medical Definition of triangular

: triquetral bone

Learn More about triangular

Spanish Central: Translation of triangular Nglish: Translation of triangular for Spanish speakers Britannica English: Translation of triangular for Arabic speakers

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triangular

Definition of triangular

triangularity

triangularly

Recent Examples of triangular from the Web

Origin and Etymology of triangular

TRIANGULAR Defined for English Language Learners

triangular

Definition of triangular for English Language Learners

TRIANGULAR Defined for Kids

triangular

Definition of triangular for Students

Medical Dictionary

triangular

medical Definition of triangular

Learn More about triangular

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