caustic surface

15 LETTERS · STARTS WITH C

caustic surface is a valid 15-letter word worth 23 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3A1U1S1T1I1C3S1U1R1F4A1C3E1

3 + 1 + 1 + 1 + 1 + 1 + 3 + 0 + 1 + 1 + 1 + 4 + 1 + 3 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does caustic surface mean?