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Related to Prokaryotae: kingdom Monera


in the classification of living organisms, a kingdom comprising all unicellular organisms that lack true nuclei (the prokaryote), including principally the bacteria. Formerly called Procaryotae.


A superkingdom of cellular organisms that includes the kingdom Monera (bacteria and blue-green algae) and is characterized by the prokaryotic condition, minute size (0.2-10 mcm for bacteria), and absence of the nuclear organization, mitotic capacities, and complex organelles that typify the superkingdom Eukaryotae.
Synonym(s): Procaryotae