HETEROGENEOUSNESS

\hɛtɹˈə͡ʊd͡ʒənˌi͡əsnəs], \hɛtɹˈə‍ʊd‍ʒənˌi‍əsnəs], \h_ɛ_t_ɹ_ˈəʊ_dʒ_ə_n_ˌiə_s_n_ə_s]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
1914 - Nuttall's Standard dictionary of the English language
By Nuttall, P.Austin.
 
1871 - The Cabinet Dictionary of the English Language