Pronunciation: [tˌɜːmɪnˈe͡ɪʃənɪŋ] (IPA)
Correct spelling for the English word "terminationing" is [tˌɜːmɪnˈe͡ɪʃənɪŋ], [tˌɜːmɪnˈeɪʃənɪŋ], [t_ˌɜː_m_ɪ_n_ˈeɪ_ʃ_ə_n_ɪ_ŋ] (IPA phonetic alphabet).
Correct spelling for terminationing