HS1

\ˌe͡ɪt͡ʃˈɛs wˈɒn], \ˌe‍ɪt‍ʃˈɛs wˈɒn], \ˌeɪ_tʃ_ˈɛ_s w_ˈɒ_n]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd