Pronunciation: [mˈɛdɪskˌe͡ɪlnəs] (IPA)
Correct spelling for the English word "mediscalenus" is [mˈɛdɪskˌe͡ɪlnəs], [mˈɛdɪskˌeɪlnəs], [m_ˈɛ_d_ɪ_s_k_ˌeɪ_l_n_ə_s] (IPA phonetic alphabet).
Musculus scalenus medius.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Correct spelling for mediscalenus