spiral of archimedes

20 LETTERS · STARTS WITH S

spiral of archimedes is a valid 20-letter word worth 31 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1P3I1R1A1L1O1F4A1R1C3H4I1M3E1D2E1S1

1 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 0 + 1 + 1 + 3 + 4 + 1 + 3 + 1 + 2 + 1 + 1 =31 PTS

DOUBLE WORD → 62TRIPLE WORD → 93

MEANING

What does spiral of archimedes mean?