Diagonal Definition & Meaning

diagonal
adjective
  1. connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face; "a diagonal line across the page"
  2. having an oblique or slanted direction
noun
  1. (geometry) a straight line connecting any two vertices of a polygon that are not adjacent
  2. a line or cut across a fabric that is not at right angles to a side of the fabric
  3. an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"
  4. (mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry
  5. a punctuation mark (/) used to separate related items of information

Synonyms for diagonal

aslant adv

over or across in a slanting direction at an oblique angle

♫ Rhymes ↔ Synonyms
aslope adj

having an oblique or slanted direction

♫ Rhymes ↔ Synonyms
bias adj

slanting diagonally across the grain of a fabric

♫ Rhymes
inclined adj

(often followed by `to') having a preference, disposition, or tendency; "wasn't inclined to believe the excuse

♫ Rhymes ↔ Synonyms
oblique adj

slanting or inclined in direction or course or position-- neither parallel nor perpendicular nor right-angled

♫ Rhymes ↔ Synonyms
separatrix noun

a punctuation mark (/) used to separate related items of information

♫ Rhymes ↔ Synonyms
slanted adj

having an oblique or slanted direction favoring one person or side over another; "a biased account of the trial

♫ Rhymes ↔ Synonyms
slanting adj

having an oblique or slanted direction

♫ Rhymes ↔ Synonyms
slash noun

a wound made by cutting; "he put a bandage over the cut" an open tract of land in a forest that is strewn with debris

♫ Rhymes ↔ Synonyms
sloped adj

having an oblique or slanted direction

♫ Rhymes ↔ Synonyms

"Diagonal" in song lyrics

See how diagonal is used in real songs:

  • "tryin to go straight, instead I go diagonal"
    Akinyele — In the World
  • "Damage em, horizontally plus diagonal"
    Gravediggaz — Unexplained
  • "Diagonal"
    Push Button Objects — 360 Degrees

Words that rhyme with diagonal

See all rhymes for diagonal →

Usage tips for "diagonal"

Understanding the precise definition of a word helps you use it with confidence. When using "diagonal" in your writing, consider whether you need the word itself or one of its synonyms — subtle differences in meaning can change the tone of a sentence. If you're writing poetry or song lyrics, check the rhymes for diagonal to find words that pair well.

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♫ Rhymes with diagonal ↔ Synonyms for diagonal 🔬 Words containing diagonal

Frequently asked questions

What does diagonal mean?
connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face; "a diagonal line across the page" having an oblique or slanted direction (geometry) a straight line connecting any two vertices of a polygon that are not adjacent a line or cut across a fabric that is not at right angles to a side of the fabric an oblique line of squares of the same color on a checkerboard
What part of speech is diagonal?
Diagonal is an adjective and a noun.
How many definitions does diagonal have?
Diagonal has 7 definitions across 2 parts of speech (adjective, noun).

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