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bacterium
[ bak-teer-ee-uhm ]
bacterium
/ æˈɪəɪə /
noun
- the singular of bacteria
bacterium
/ ă-î′ŧ-ə /
, Plural bacteria
- Any of a large group of one-celled organisms that lack a cell nucleus, reproduce by fission or by forming spores, and in some cases cause disease. They are the most abundant lifeforms on Earth, and are found in all living things and in all of the Earth's environments. Bacteria usually live off other organisms. Bacteria make up most of the kingdom of prokaryotes (Monera or Prokaryota), with one group (the archaea) sometimes classified as a separate kingdom.
- See also archaeon
51Թ History and Origins
Origin of bacterium1
Usage
Example Sentences
One descendant of our last common ancestor went on to engulf a photosynthetic bacterium, which would then toil away harnessing the power of the sun to fuel this progenitor of all plants.
The opening of a new £41m Sussex health centre has been delayed after inspectors found legionella bacterium in the heating system.
His company selected a bacterium from nature that doesn't eat sugar or perform photosynthesis.
To avoid the complications of working with a live organism, the researchers developed a powder preparation made from dead, dried cells of the bacterium.
An analysis of fungi collected from peat bogs has identified several species that produce substances toxic to the bacterium that causes the human disease tuberculosis.
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