idiogenesis

id·i·o·gen·e·sis

(id'ē-ō-jen'ĕ-sis), Origin without evident cause; denoting especially that of an idiopathic disease. [idio- + G. genesis, production]

id·i·o·gen·e·sis

(id'ē-ō-jen'ĕ-sis) Origin without evident cause. [idio- + G. genesis, production]