voltage gradient

16 LETTERS · STARTS WITH V

voltage gradient is a valid 16-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

V4O1L1T1A1G2E1G2R1A1D2I1E1N1T1

4 + 1 + 1 + 1 + 1 + 2 + 1 + 0 + 2 + 1 + 1 + 2 + 1 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does voltage gradient mean?