spherical coordinates

21 LETTERS · STARTS WITH S

spherical coordinates is a valid 21-letter word worth 30 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1P3H4E1R1I1C3A1L1C3O1O1R1D2I1N1A1T1E1S1

1 + 3 + 4 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 =30 PTS

DOUBLE WORD → 60TRIPLE WORD → 90

MEANING

What does spherical coordinates mean?