periodic wave

13 LETTERS · STARTS WITH P

periodic wave is a valid 13-letter word worth 23 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3E1R1I1O1D2I1C3W4A1V4E1

3 + 1 + 1 + 1 + 1 + 2 + 1 + 3 + 0 + 4 + 1 + 4 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does periodic wave mean?