Correct spelling for the English word "Hederal" is [hˈɛdəɹə͡l], [hˈɛdəɹəl], [h_ˈɛ_d_ə_ɹ_əl] (IPA phonetic alphabet).
Composed of or pert. to ivy.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.