モネラMeanings1nounMoneraFormer biological kingdom, now divided into Eubacteria and Archaebacteria. Used in historical or educational contexts.from Latinかつて生せい物ぶつはモネラ界かいを含ふくむ五ご界かいに分ぶん類るいされていた。Living organisms were once classified into five kingdoms, including Monera.