relative permeability

21 LETTERS · STARTS WITH R

relative permeability is a valid 21-letter word worth 32 points in Scrabble and 37 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1L1A1T1I1V4E1P3E1R1M3E1A1B3I1L1I1T1Y4

1 + 1 + 1 + 1 + 1 + 1 + 4 + 1 + 0 + 3 + 1 + 1 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 4 =32 PTS

DOUBLE WORD → 64TRIPLE WORD → 96

MEANING

What does relative permeability mean?