pollutant

NOUN
9 LETTERS · 3 SYLLABLES · STARTS WITH P

pollutant is a valid 9-letter word worth 11 points in Scrabble and 16 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3O1L1L1U1T1A1N1T1
3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =11 PTS
DOUBLE WORD → 22TRIPLE WORD → 33
MEANING

What does pollutant mean?