mass number

NOUN
11 LETTERS · 2 SYLLABLES · STARTS WITH M

mass number is a valid 11-letter word worth 16 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
M3A1S1S1N1U1M3B3E1R1
3 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 3 + 1 + 1 =16 PTS
DOUBLE WORD → 32TRIPLE WORD → 48
MEANING

What does mass number mean?

NOUN · 1 SENSE
1

The sum of the number of neutrons and protons in an atomic nucleus.

BROADER