contrary motion

15 LETTERS · STARTS WITH C

contrary motion is a valid 15-letter word worth 21 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3O1N1T1R1A1R1Y4M3O1T1I1O1N1
3 + 1 + 1 + 1 + 1 + 1 + 1 + 4 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does contrary motion mean?

1