RECIPROCALITY

\ɹɪsˌɪpɹəkˈalɪti], \ɹɪsˌɪpɹəkˈalɪti], \ɹ_ɪ_s_ˌɪ_p_ɹ_ə_k_ˈa_l_ɪ_t_i]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.