mounting medium

15 LETTERS · STARTS WITH M

mounting medium is a valid 15-letter word worth 22 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

M3O1U1N1T1I1N1G2M3E1D2I1U1M3

3 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 3 + 1 + 2 + 1 + 1 + 3 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does mounting medium mean?