Correct spelling for the English word "mogiphonia" is [mˌɒd͡ʒɪfˈə͡ʊni͡ə], [mˌɒdʒɪfˈəʊniə], [m_ˌɒ_dʒ_ɪ_f_ˈəʊ_n_iə] (IPA phonetic alphabet).
Laryngeal spasm occurring in elocutionists, a form of professional neurosis.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.