Correct spelling for the English word "agoniadin" is [aɡˈə͡ʊnɪˌadɪn], [aɡˈəʊnɪˌadɪn], [a_ɡ_ˈəʊ_n_ɪ__ˌa_d_ɪ_n] (IPA phonetic alphabet).
A glucoside, C10H14O5, obtained from the bark of Plumeria lancifolia and other species of P.; employed as a febrifuge in malaria in doses of gr. 2-4 (0.12-0.25).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.