autoignition point

18 LETTERS · STARTS WITH A

autoignition point is a valid 18-letter word worth 20 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

A1U1T1O1I1G2N1I1T1I1O1N1P3O1I1N1T1

1 + 1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does autoignition point mean?