Pronunciation: [pˌa͡ɪɹə͡ʊsˈa͡ɪzɪz] (IPA)
Correct spelling for the English word "pyrosises" is [pˌa͡ɪɹə͡ʊsˈa͡ɪzɪz], [pˌaɪɹəʊsˈaɪzɪz], [p_ˌaɪ_ɹ_əʊ_s_ˈaɪ_z_ɪ_z] (IPA phonetic alphabet).