Pronunciation: [ˌɛkssˌiːˈa͡ɪ] (IPA)
Correct spelling for the English word "xci" is [ˌɛkssˌiːˈa͡ɪ], [ˌɛkssˌiːˈaɪ], [ˌɛ_k_s_s_ˌiː__ˈaɪ] (IPA phonetic alphabet).
Correct spelling for xci