source of illumination

NOUN
22 LETTERS · STARTS WITH S

source of illumination is a valid 22-letter word worth 27 points in Scrabble and 35 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1O1U1R1C3E1O1F4I1L1L1U1M3I1N1A1T1I1O1N1
1 + 1 + 1 + 1 + 3 + 1 + 0 + 1 + 4 + 0 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does source of illumination mean?

NOUN · 1 SENSE
1

Any device serving as a source of visible electromagnetic radiation.

BROADER