thermophosphorescent

20 LETTERS · 6 SYLLABLES · STARTS WITH T

thermophosphorescent is a valid 20-letter word worth 37 points in Scrabble and 39 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1H4E1R1M3O1P3H4O1S1P3H4O1R1E1S1C3E1N1T1

1 + 4 + 1 + 1 + 3 + 1 + 3 + 4 + 1 + 1 + 3 + 4 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 =37 PTS

DOUBLE WORD → 74TRIPLE WORD → 111

MEANING

What does thermophosphorescent mean?