series spectra

14 LETTERS · STARTS WITH S

series spectra is a valid 14-letter word worth 17 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1E1R1I1E1S1S1P3E1C3T1R1A1

1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 3 + 1 + 3 + 1 + 1 + 1 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does series spectra mean?