ASTRONAUTICS

\ˌastɹənˈɔːtɪks], \ˌastɹənˈɔːtɪks], \ˌa_s_t_ɹ_ə_n_ˈɔː_t_ɪ_k_s]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd