Definitions

diagonal

[dahy-ag-uh-nl, -ag-nl] / daɪˈæg ə nl, -ˈæg nl /

ADJECTIVE

having an oblique direction

Synonyms

STRONGEST

catty-corner crosswise oblique slanted

STRONG

inclining

WEAK

askew beveled cater-corner cater-cornered catercorner catty-cornered kitty-corner kitty-cornered skewing slanting transversal transverse

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The chip is giant, taking up an entire 300 millimeter silicon wafer, almost a foot long across the chip’s diagonal line.

From Barron's • May 11, 2026

Downtown Los Angeles’ street grid is diagonal, a legacy of Spanish rule.

From Los Angeles Times • May 8, 2026

Giant anteaters have black and white diagonal stripes, dense shaggy hair and super-sized snouts.

From BBC • Apr. 1, 2026

"But, in the Sagittarius Arm, it's going counterclockwise. We didn't understand how the transition occurred. Then one day, Anna brought in some data, and I went, 'O.M.G., the reversal's diagonal!'"

From Science Daily • Feb. 24, 2026

I am diagonal from Stuart, placed as far as possible from him.

From "The Help" by Kathryn Stockett

Vocabulary lists containing diagonal

Check It Out, Mate: Chess Vocabulary

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The ACT Math Test: Geometry, List 2

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Geometry - High School

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!