triangle definition, meaning - what is triangle in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “triangle”

See all translations

triangle

noun [C] uk   us   /ˈtraɪ.æŋ.ɡl̩/
B2 a flat shape with three straight sides: an equilateral/isosceles triangle anything that has three straight sides: Which earrings did you buy in the end - the triangles or the circles? a musical instrument consisting of a thin metal bar bent into a triangle shape that is hit with a metal bar to make a sound US (UK set square) a flat piece of metal or plastic in the shape of a triangle with one angle of 90°, used for drawing angles (also frame) a three-sided frame for arranging the balls at the start of a game of billiards , pool, etc.
More examples
(Definition of triangle from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of triangle?
Add Cambridge dictionaries to your browser to your website

Definitions of “triangle” in other dictionaries

Word of the Day

disappear off the face of the earth

to disappear completely

Word of the Day

The language of elections

by Liz Walter,
April 22, 2015
On May 7th, citizens of the UK will be going to the polls (having an election) to decide who will form the next government. This kind of election is known as a general election. The country is divided into 650 areas, called constituencies. Each constituency elects a member of parliament (MP) to

Read More 

dumbwalking noun

April 20, 2015
walking slowly, without paying attention to the world around you because you are consulting a smartphone He told me dumbwalking probably wouldn’t be a long-term problem.

Read More