port differential

17 LETTERS · STARTS WITH P

port differential is a valid 17-letter word worth 25 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3O1R1T1D2I1F4F4E1R1E1N1T1I1A1L1

3 + 1 + 1 + 1 + 0 + 2 + 1 + 4 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does port differential mean?