SULFUR DIOXIDE

\sˈʌlfɜː da͡ɪˈɒksa͡ɪd], \sˈʌlfɜː da‍ɪˈɒksa‍ɪd], \s_ˈʌ_l_f_ɜː d_aɪ_ˈɒ_k_s_aɪ_d]\
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2011 - English Dictionary Database
By DataStellar Co., Ltd
 
2006 - WordNet 3.0
By Princeton University
 
2010 - Medical Dictionary Database
By DataStellar Co., Ltd