Correct spelling for the English word "Sejungible" is [sˈɛd͡ʒənd͡ʒəbə͡l], [sˈɛdʒəndʒəbəl], [s_ˈɛ_dʒ_ə_n_dʒ_ə_b_əl] (IPA phonetic alphabet).
The term sejungible is not widely recognized and does not have an established etymology. It appears to be a combination of the prefix se- which means apart or separate, and the word jungible, which means interchangeable or fungible. It might be a newly coined word or a specialized term within a particular context. Without more information, it is challenging to determine a specific etymology for sejungible.