ignition temperature

20 LETTERS · STARTS WITH I

ignition temperature is a valid 20-letter word worth 24 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1G2N1I1T1I1O1N1T1E1M3P3E1R1A1T1U1R1E1

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

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does ignition temperature mean?