Correct spelling for the English word "Protense" is [pɹˈə͡ʊtəns], [pɹˈəʊtəns], [p_ɹ_ˈəʊ_t_ə_n_s] (IPA phonetic alphabet).
There is no widely recognized word "Protense" in the English language. It is possible that it may be a coined term or a specialized term used in a specific field or context that is not widely known. Without further information or context, it is difficult to determine the etymology of the word.