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Definition of “diagonal” - English Dictionary

"diagonal" in American English

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diagonaladjective

 us   /dɑɪˈæɡ·ə·nəl/
geometry (of a line) straight and sloping, so that it is neither horizontal nor vertical: A diagonal line in a circle is often used as a symbol to show that certain behavior is forbidden.
(Definition of diagonal from the Cambridge Academic Content Dictionary © Cambridge University Press)







"diagonal" in British English

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diagonaladjective

uk   /daɪˈæɡ.ən.əl/  us   /daɪˈæɡ.ən.əl/
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.

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diagonally
adverb uk   /daɪˈæɡ.ən.əl.i/  us   /daɪˈæɡ.ən.əl.i/
It's quickest if you cut diagonally across the park.

diagonalnoun [C]

uk   /daɪˈæɡ.ən.əl/  us   /daɪˈæɡ.ən.əl/ specialized
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)
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