Pronunciation: [kˈɒsɪˌə͡ʊ] (IPA)
Correct spelling for the English word "cossio" is [kˈɒsɪˌə͡ʊ], [kˈɒsɪˌəʊ], [k_ˈɒ_s_ɪ__ˌəʊ] (IPA phonetic alphabet).