microorganism

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microorganism

[¦mī·krō′ȯr·gə‚niz·əm]
(microbiology)
A microscopic organism, including bacteria, protozoans, yeast, viruses, and algae.
References in periodicals archive ?
The whole truth is that the immediate product of fertilization or cloning is a cell, but it is also a single cell organism, a human being, and a human person.
One of the most fundamental issues in evolutionary biology is the nature of transitions from single cell organisms to multi-cellular ones, with accompanying cellular differentiation and specialization.
Bacteria are single cell organisms that can survive independently.

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