oxyacid

NOUN /ɑksi,æsɪd/
7 LETTERS · 4 SYLLABLES · STARTS WITH O

oxyacid is a valid 7-letter word worth 20 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
O1X8Y4A1C3I1D2
1 + 8 + 4 + 1 + 3 + 1 + 2 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does oxyacid mean?