DUTY PERIOD

\djˈuːti pˈi͡əɹɪəd], \djˈuːti pˈi‍əɹɪəd], \d_j_ˈuː_t_i p_ˈiə_ɹ_ɪ__ə_d]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd