Correct spelling for the English word "helispherica" is [hɛlˈɪsfəɹˌɪkə], [hɛlˈɪsfəɹˌɪkə], [h_ɛ_l_ˈɪ_s_f_ə_ɹ_ˌɪ_k_ə] (IPA phonetic alphabet).
Spiral or winding.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.