OPPORTUNISTIC INFECTION

\ɒpətjuːnˈɪstɪk ɪnfˈɛkʃən], \ɒpətjuːnˈɪstɪk ɪnfˈɛkʃən], \ɒ_p_ə_t_j_uː_n_ˈɪ_s_t_ɪ_k ɪ_n_f_ˈɛ_k_ʃ_ə_n]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
2010 - Medical Dictionary Database
By DataStellar Co., Ltd