[1] : WordNet (r) 2.0

carbonic acid gas
     n : a heavy odorless colorless gas formed during respiration and
         by the decomposition of organic substances; absorbed from
         the air by plants in photosynthesis syn: carbon dioxide,
          co2
see also:
carbon dioxide co2 

Acid >> A Words
Acid, definition of term: Acid
acid_pag1.html

Acid Rain >> A Words
Acid Rain, definition of term: Acid Rain
acid+rain_pag1.html

Acid Test >> A Words
Acid Test, definition of term: Acid Test
acid+test_pag1.html

Arsenious Acid >> A Words
Arsenious Acid, definition of term: Arsenious Acid
arsenious+acid_pag1.html

Amino Acid >> A Words
Amino Acid, definition of term: Amino Acid
amino+acid_pag1.html

Amido Acid >> A Words
Amido Acid, definition of term: Amido Acid
amido+acid_pag1.html

Acetic Acid >> A Words
Acetic Acid, definition of term: Acetic Acid
acetic+acid_pag1.html