rotation axis

13 LETTERS · STARTS WITH R

rotation axis is a valid 13-letter word worth 19 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1O1T1A1T1I1O1N1A1X8I1S1

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 8 + 1 + 1 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does rotation axis mean?