triangular

C2+ Topic:Describing Qualities

US /traɪˈæŋɡjələr/ UK /traɪˈæŋɡjʊlə/ See IPA manual

adj

Meanings

1

adj
having the shape of a triangle; involving three parties

The sail was a crisp triangular sheet against the blue sky.

Thesaurus

Synonyms

1 adj · having the shape of a... three-sidedtrilateraldeltoidtrigonal

Word family

Derived forms triangularitytriangularly

Related forms triangletriangulateangletriangulation

Etymology

From Late Latin triangularis, from Latin triangulum ('triangle'), from tri- ('three') + angulus ('corner, angle').

triangularis Latin tri Latin angulus Latin

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Topics

Describing Qualities Word Formation & Derivatives

# triangular

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** traɪˈæŋɡjələr
**IPA (UK):** traɪˈæŋɡjʊlə

## Meanings
1. having the shape of a triangle; involving three parties

## Examples
- The sail was a crisp triangular sheet against the blue sky.

## Synonyms
- three-sided
- trilateral
- deltoid
- trigonal

## Derived Forms
- triangularity
- triangularly

## Related Forms
- triangle
- triangulate
- angle
- triangulation

## Roots and Affixes
- Root: triangularis
- Root: tri
- Root: angulus

## Etymology
From Late Latin triangularis, from Latin triangulum ('triangle'), from tri- ('three') + angulus ('corner, angle').

## AI Etymology
Triangular is from Late Latin triangularis, from Latin triangulum ('triangle'), from tri- ('three') + angulus ('corner, angle'). Important recorded forms include triangularis (Latin), tri (Latin), and angulus (Latin). Morphologically, the word preserves a built structure whose named elements carry the historical sense into English. The modern sense continues the older lexical line without requiring a separate origin. In current use it covers having the shape of a triangle; involving three parties. The wider family includes derived forms such as triangularity and triangularly and related words such as triangle, triangulate, angle, and triangulation.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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triangular

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