stellar photometry

18 LETTERS · STARTS WITH S

stellar photometry is a valid 18-letter word worth 27 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1T1E1L1L1A1R1P3H4O1T1O1M3E1T1R1Y4

1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 4 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 4 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does stellar photometry mean?