mercury-vapour lamp

19 LETTERS · STARTS WITH M

mercury-vapour lamp is a valid 19-letter word worth 33 points in Scrabble and 41 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

M3E1R1C3U1R1Y4-0V4A1P3O1U1R1L1A1M3P3

3 + 1 + 1 + 3 + 1 + 1 + 4 + 0 + 4 + 1 + 3 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 3 =33 PTS

DOUBLE WORD → 66TRIPLE WORD → 99

MEANING

What does mercury-vapour lamp mean?