diagonalisation

NOUN
15 LETTERS · STARTS WITH D

diagonalisation is a valid 15-letter word worth 17 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
D2I1A1G2O1N1A1L1I1S1A1T1I1O1N1
2 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =17 PTS
DOUBLE WORD → 34TRIPLE WORD → 51
MEANING

What does diagonalisation mean?

NOUN · 1 SENSE
1

Changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal).