sunspot cycle

13 LETTERS · STARTS WITH S

sunspot cycle is a valid 13-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1U1N1S1P3O1T1C3Y4C3L1E1

1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 3 + 4 + 3 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does sunspot cycle mean?