Pronunciation: [pɹɪzˈə͡ʊn] (IPA)
Correct spelling for the English word "prezone" is [pɹɪzˈə͡ʊn], [pɹɪzˈəʊn], [p_ɹ_ɪ_z_ˈəʊ_n] (IPA phonetic alphabet).
Prozone.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.