PREHISTORIC

\pɹˌiːhɪstˈɒɹɪk], \pɹˌiːhɪstˈɒɹɪk], \p_ɹ_ˌiː_h_ɪ_s_t_ˈɒ_ɹ_ɪ_k]\
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2011 - English Dictionary Database
By DataStellar Co., Ltd
 
2006 - WordNet 3.0
By Princeton University
 
1919 - The Winston Simplified Dictionary
By William Dodge Lewis, Edgar Arthur Singer
 
1899 - The american dictionary of the english language.
By Daniel Lyons