Pronunciation: [d͡ʒˌiːə͡ʊpˈɒnɪksɪz] (IPA)
Correct spelling for the English word "geoponicses" is [d͡ʒˌiːə͡ʊpˈɒnɪksɪz], [dʒˌiːəʊpˈɒnɪksɪz], [dʒ_ˌiː__əʊ_p_ˈɒ_n_ɪ_k_s_ɪ_z] (IPA phonetic alphabet).
Correct spelling for geoponicses