Correct spelling for the English word "Dialogistical" is [dˌa͡ɪ͡ələd͡ʒˈɪstɪkə͡l], [dˌaɪələdʒˈɪstɪkəl], [d_ˌaɪə_l_ə_dʒ_ˈɪ_s_t_ɪ_k_əl] (IPA phonetic alphabet).
Having the form of a dialogue.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.