Meaning & Definition of Diagonal in English
English⟶
Diagonal
/daɪægənəl/
noun
1. (geometry) a straight line connecting any two vertices of a polygon that are not adjacent
synonym:
- diagonal
2. A line or cut across a fabric that is not at right angles to a side of the fabric
synonym:
- diagonal,
- bias
3. An oblique line of squares of the same color on a checkerboard
- "The bishop moves on the diagonals"
synonym:
- diagonal
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
synonym:
- diagonal
5. A punctuation mark (/) used to separate related items of information
synonym:
- solidus,
- slash,
- virgule,
- diagonal,
- stroke,
- separatrix
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"
synonym:
- diagonal
2. Having an oblique or slanted direction
synonym:
- aslant,
- aslope,
- diagonal,
- slanted,
- slanting,
- sloped,
- sloping
Examples of using
A diagonal matrix is positive semidefinite if and only if all of its elements are nonnegative.