INTERACTIONAL

\ˌɪntəɹˈakʃənə͡l], \ˌɪntəɹˈakʃənə‍l], \ˌɪ_n_t_ə_ɹ_ˈa_k_ʃ_ə_n_əl]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd