Monera /(?)/

Mo·ne·ra

Monera

n. pl.
  1. The lowest division of rhizopods, including those which resemble the amoebas, but are destitute of a nucleus. (Zool.) [archaic]
  2. One of the five kingdoms of living organisms in the five-kingdom classification, consisting of microscopic usually monocellular prokaryotic organisms that mostly reproduce by asexual fission, sporulation, or budding; it includes the bacteria and cyanophytes (blue-green algae), as well as certain primitive pathogenic microbes, such as the Rickettsias. (Biol.)