decolorize

VERB /di'kələ,raɪz/
10 LETTERS · 4 SYLLABLES · STARTS WITH D

decolorize is a valid 10-letter word worth 22 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
D2E1C3O1L1O1R1I1Z10E1
2 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 10 + 1 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does decolorize mean?