diffusion battery

17 LETTERS · STARTS WITH D

diffusion battery is a valid 17-letter word worth 28 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

D2I1F4F4U1S1I1O1N1B3A1T1T1E1R1Y4

2 + 1 + 4 + 4 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 4 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does diffusion battery mean?