class inclusion

15 LETTERS · STARTS WITH C

class inclusion is a valid 15-letter word worth 18 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3L1A1S1S1I1N1C3L1U1S1I1O1N1

3 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does class inclusion mean?