Correct spelling for the English word "deradenoncus" is [dˈɛɹɐdənˌɒnkəs], [dˈɛɹɐdənˌɒnkəs], [d_ˈɛ_ɹ_ɐ_d_ə_n_ˌɒ_n_k_ə_s] (IPA phonetic alphabet).
A swelling or tumor of the cervical lymph glands.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.