minus acceleration

18 LETTERS · STARTS WITH M

minus acceleration is a valid 18-letter word worth 23 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

M3I1N1U1S1A1C3C3E1L1E1R1A1T1I1O1N1

3 + 1 + 1 + 1 + 1 + 0 + 1 + 3 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does minus acceleration mean?