cusp locus

10 LETTERS · STARTS WITH C

cusp locus is a valid 10-letter word worth 15 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3U1S1P3L1O1C3U1S1

3 + 1 + 1 + 3 + 0 + 1 + 1 + 3 + 1 + 1 =15 PTS

DOUBLE WORD → 30TRIPLE WORD → 45

MEANING

What does cusp locus mean?