Correct spelling for the English word "Asiphonea" is [ɐsɪfˈə͡ʊni͡ə], [ɐsɪfˈəʊniə], [ɐ_s_ɪ_f_ˈəʊ_n_iə] (IPA phonetic alphabet).
Asiphonea is not a recognized English term and does not have an existing dictionary definition. It appears to be a misspelled or non-existent word. However, it is quite possible that you may be referring to a different term or word with a similar sounding name. It is recommended to recheck the spelling or provide additional context so that a more accurate definition can be provided.