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 ?
Protozoa are single-celled animals such as Plasmodium falciparum.
The shells of single-celled animals that lived in the basin's waters during stage 11 contain significantly more of the lighter isotope than is seen in modern shells.
But the genes of one group of organisms, single-celled animals called ciliates, are not translated well by the cellular machinery of other organisms.

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