Pronunciation: [ˈɛmhˈɑːt] (IPA)
Correct spelling for the English word "MHEART" is [ˈɛmhˈɑːt], [ˈɛmhˈɑːt], [ˈɛ_m_h_ˈɑː_t] (IPA phonetic alphabet).
Correct spelling for MHEART