interplanetary dust

NOUN
19 LETTERS · STARTS WITH I

interplanetary dust is a valid 19-letter word worth 24 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1T1E1R1P3L1A1N1E1T1A1R1Y4D2U1S1T1
1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 4 + 0 + 2 + 1 + 1 + 1 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does interplanetary dust mean?

NOUN · 1 SENSE
1

Microscopic particles in the interplanetary medium.

BROADER