Pronunciation: [mˈɜːkjuːsə͡l] (IPA)
Correct spelling for the English word "Mercusal" is [mˈɜːkjuːsə͡l], [mˈɜːkjuːsəl], [m_ˈɜː_k_j_uː_s_əl] (IPA phonetic alphabet).
Correct spelling for Mercusal