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 researchers used statellite measurements and a computer model to determine whether these one-celled plants have a significant effect on sea-surface temperatures in the region.
When it comes to genetic sleight-of-hand, the one-celled trypanosomatids surely rank as masters.
Phytoplankton, one-celled floating plants, form a critical base for the oceanic food web.
Ambient light irradiated the one-celled organisms in the first tank.
In some ways, Shaw's hypothesis echoes ideas raised 14 years ago by a group of oceanographers who studied the ancient remains of one-celled animals buried under sediment on the floor of the Gulf of Mexico.