internal stress

15 LETTERS · STARTS WITH I

internal stress is a valid 15-letter word worth 14 points in Scrabble and 17 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1T1E1R1N1A1L1S1T1R1E1S1S1

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 1 =14 PTS

DOUBLE WORD → 28TRIPLE WORD → 42

MEANING

What does internal stress mean?