intermediate period

19 LETTERS · STARTS WITH I

intermediate period is a valid 19-letter word worth 24 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1T1E1R1M3E1D2I1A1T1E1P3E1R1I1O1D2
1 + 1 + 1 + 1 + 1 + 3 + 1 + 2 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 2 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does intermediate period mean?

1