Meaning & use

Monera

proper noun·Advanced

A former biological kingdom that grouped all prokaryotic organisms, especially bacteria, before modern classification split it apart.

See it in a sentence

Older textbooks placed bacteria in the kingdom Monera alongside other simple, single-celled organisms.

Monera has largely been replaced in modern taxonomy by the domains Bacteria and Archaea.

A note on using this word

Monera is now considered outdated, since genetic research showed the organisms it grouped together were not as closely related as once thought.

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