addition axiom

14 LETTERS · STARTS WITH A

addition axiom is a valid 14-letter word worth 24 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

A1D2D2I1T1I1O1N1A1X8I1O1M3

1 + 2 + 2 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 8 + 1 + 1 + 3 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does addition axiom mean?