Correct spelling for the English word "Imprevalence" is [ɪmpɹˈɛvələns], [ɪmpɹˈɛvələns], [ɪ_m_p_ɹ_ˈɛ_v_ə_l_ə_n_s] (IPA phonetic alphabet).
"Imprevalence" is not a recognized English word, and therefore it does not have an established etymology. It appears to be a combination of the prefix "im-", meaning "not" or "opposite", and the word "prevalence", implying the state of being widespread or dominant. However, since "imprevalence" is not a commonly used term, its origin and exact meaning may vary depending on the context in which it is used.