Correct spelling for the English word "anidean" is [ˈanɪdˌi͡ən], [ˈanɪdˌiən], [ˈa_n_ɪ_d_ˌiə_n] (IPA phonetic alphabet).
Shapeless, amorphous; noting a formless monster, anideus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.