telephone insulation

20 LETTERS · STARTS WITH T

telephone insulation is a valid 20-letter word worth 24 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
T1E1L1E1P3H4O1N1E1I1N1S1U1L1A1T1I1O1N1
1 + 1 + 1 + 1 + 3 + 4 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does telephone insulation mean?

1