diagonal
Concise Oxford English Dictionary © 2008 Oxford University Press:
diagonal /dʌɪˈag(ə)n(ə)l/
▶adjective denoting a straight line joining opposite corners of a rectangle, square, or other figure.
■ (of a line) straight and at an angle; slanting.
■ Mathematics denoting a matrix with non-zero elements only on the diagonal running from the upper left to the lower right.
▶noun a diagonal line.– derivatives
diagonally adverb.
diagonally adverb.
– origin C16: from L. diagonalis, from Gk diagōnios ‘from angle to angle’, from dia ‘through’ + gōnia ‘angle’.
'diagonal' also found in these Oxford entries:
backslash
- bend
- bend sinister
- bias
- bishop
- bloomer
- fianchetto
- fret
- kite
- lattice frame
- magic square
- mitre
- ogive
- petit point
- St Andrew's cross
- saltire
- stroke
- Sylvian fissure
- tableau curtains
- tent stitch
- trace
- trot
- twill
