Pronunciation: [ɐsɪdˈe͡ɪʃən] (IPA)
Correct spelling for the English word "ASSEDATION" is [ɐsɪdˈe͡ɪʃən], [ɐsɪdˈeɪʃən], [ɐ_s_ɪ_d_ˈeɪ_ʃ_ə_n] (IPA phonetic alphabet).
Correct spelling for ASSEDATION