[ dahy-ag-uh-nl-ahyz, -ag-nl- ]
/ daɪˈæg ə nlˌaɪz, -ˈæg nl- /
verb (used with object), di·ag·o·nal·ized, di·ag·o·nal·iz·ing.
Mathematics. to transform (a matrix) to a diagonal matrix.
Before X Was X: The Dark Horse Story Of The 24th LetterSince its inception, the letter X has struggled to establish its own identity, so it may be no coincidence that X is commonly used to represent the unknown in both language and mathematics. But, how was it created?
Also especially British, di·ag·o·nal·ise.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019