Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “diagonal”

See all translations

diagonal

adjective uk   /daɪˈæɡ.ən.əl/ us  
A diagonal line is straight and sloping, not horizontal or vertical, for example joining two opposite corners of a square or other flat shape with four sides: The book has a diagonal black stripe on the cover. moving in a diagonal line: The artist achieves this effect using short diagonal strokes. Peters received a diagonal pass and headed the ball into the net.
More examples
diagonally
adverb uk   /-i/ us  
It's quickest if you cut diagonally across the park.

diagonal

noun [C] uk   /daɪˈæɡ.ən.əl/ specialized us  
a straight line that joins two opposite corners of a four-sided flat shape, such as a square
(Definition of diagonal from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of diagonal?
Add Cambridge dictionaries to your browser to your website

Definitions of “diagonal” in other dictionaries

Word of the Day

luck

the force that causes things, especially good things, to happen to you by chance and not as a result of your own efforts or abilities

Word of the Day

A certain je ne sais quoi: French words and phrases used in English

by Liz Walter,
January 21, 2015
It is an odd irony that the more sophisticated your use of English is, the more likely you are to use French words and phrases. Or, to be more accurate, ones you know to be French – words such as ballet, au pair, abattoir, fiancé, café, and restaurant are so entrenched in

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More