Pronunciation: [dˌa͡ɪəɡnˌɒstɪkˈe͡ɪʃən] (IPA)
Correct spelling for the English word "diagnostication" is [dˌa͡ɪəɡnˌɒstɪkˈe͡ɪʃən], [dˌaɪəɡnˌɒstɪkˈeɪʃən], [d_ˌaɪ_ə_ɡ_n_ˌɒ_s_t_ɪ_k_ˈeɪ_ʃ_ə_n] (IPA phonetic alphabet).
Correct spelling for diagnostication