vapor density

NOUN /veɪpər_'dɛnsɪti/
13 LETTERS · STARTS WITH V

vapor density is a valid 13-letter word worth 21 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
V4A1P3O1R1D2E1N1S1I1T1Y4
4 + 1 + 3 + 1 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 + 4 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does vapor density mean?

NOUN · 1 SENSE
1

The density of a gas relative to the density of hydrogen.