addition compound

17 LETTERS · STARTS WITH A

addition compound is a valid 17-letter word worth 25 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

A1D2D2I1T1I1O1N1C3O1M3P3O1U1N1D2

1 + 2 + 2 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 3 + 3 + 1 + 1 + 1 + 2 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does addition compound mean?