Correct spelling for the English word "metopantritis" is [mˌɛtəpantɹˈa͡ɪtɪs], [mˌɛtəpantɹˈaɪtɪs], [m_ˌɛ_t_ə_p_a_n_t_ɹ_ˈaɪ_t_ɪ_s] (IPA phonetic alphabet).
Inflammation in a frontal sinus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.