triangular

[ trahy-ang-gyuh-ler ]

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.

triangular

/ traɪˌæŋɡjʊˈlærɪtɪ; traɪˈæŋɡjʊlə /

adjective

1. Alsotrigonal 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

• triˈangularly, adverb
• triangularity, noun

Other Words From

• tri·an·gu·lar·i·ty [trahy-ang-gy, uh, -, lar, -i-tee], noun
• tri·angu·lar·ly adverb
• subtri·angu·lar adjective
• subtri·angu·lari·ty noun

Word History and Origins

Origin of triangular¹

1535–45; < Latin triangulāris, equivalent to triangul ( um ) triangle + -āris -ar ¹

Example Sentences

A tetrahedron has a triangular base and three triangular sides that form a pyramid.

From Quanta Magazine

The curved handle means it can be grasped firmly and comfortably from a variety of angles, and the triangular nose of the brush can reach even the smallest of nooks.

From Popular-Science

They’re typically shaded blue, with triangular flags pointing in the direction of the front’s forward movement.

From Outside Online

Shaded in an updated bipartisan purple, the triangular symbol is clicked to surface information including advertiser name and address, information about contributions and expenditures made by the advertiser and other disclaimers.

From Digiday

Two developers submitted dueling bids for the right to revamp a 48-acre triangular stretch of land off Sports Arena Boulevard in San Diego’s Midway District.

From Voice of San Diego

The dominant silhouette in the collection was an A-line, triangular shape with narrow shoulders and a full skirt.

From The Daily Beast

“Those pink, triangular houses are very much a symbol for strangeness,” said Pickwoad.

From The Daily Beast

There is an odd triangular-shaped hill that rises on one side very boldly and abruptly, called the Fox's Head.

From Project Gutenberg

As stated in the chapter on astronomy, some trace of the triangular form appears in the land masses of the planet Mars.

From Project Gutenberg

The upper ones have their costa blackish, and a triangular border at their extremity rather dentated on the inside.

From Project Gutenberg

The treeless part of the plains, the prairie proper, has a triangular shape with an area twice as large as that of Great Britain.

From Project Gutenberg

This is a southern barrier of the Kremlin and is a fortress of nearly triangular shape.

From Project Gutenberg

Related Words

• trilateral