DISTRICT OF COLUMBIA

\dˈɪstɹɪkt ɒv kəlˈʌmbi͡ə], \dˈɪstɹɪkt ɒv kəlˈʌmbi‍ə], \d_ˈɪ_s_t_ɹ_ɪ_k_t ɒ_v k_ə_l_ˈʌ_m_b_iə]\
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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