reduced mass

12 LETTERS · STARTS WITH R

reduced mass is a valid 12-letter word worth 17 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1D2U1C3E1D2M3A1S1S1

1 + 1 + 2 + 1 + 3 + 1 + 2 + 0 + 3 + 1 + 1 + 1 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does reduced mass mean?