interstellar medium

NOUN
19 LETTERS · STARTS WITH I

interstellar medium is a valid 19-letter word worth 23 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1T1E1R1S1T1E1L1L1A1R1M3E1D2I1U1M3
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 2 + 1 + 1 + 3 =23 PTS
DOUBLE WORD → 46TRIPLE WORD → 69
MEANING

What does interstellar medium mean?

NOUN · 1 SENSE
1

Interstellar space including streams of protons moving from the stars.