transition point

16 LETTERS · STARTS WITH T

transition point is a valid 16-letter word worth 17 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1R1A1N1S1I1T1I1O1N1P3O1I1N1T1

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does transition point mean?