ATOMIC MASS

\ɐtˈɒmɪk mˈas], \ɐtˈɒmɪk mˈas], \ɐ_t_ˈɒ_m_ɪ_k m_ˈa_s]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd