Microorganism
[mahy-kroh-awr-guh-niz-uh m] /ˌmaɪ kroʊˈɔr gəˌnɪz əm/
noun
1.
any too small to be viewed by the unaided eye, as bacteria, protozoa, and some fungi and algae.
/ˌmaɪkrəʊˈɔːɡəˌnɪzəm/
noun
1.
any organism, such as a bacterium, protozoan, or virus, of microscopic size
microorganism mi·cro·or·gan·ism (mī’krō-ôr’gə-nĭz’əm)
n.
An organism of microscopic or submicroscopic size, especially a bacterium or protozoan.
microorganism
(mī’krō-ôr’gə-nĭz’əm)
An organism that can be seen only with the aid of a microscope and that typically consists of only a single cell. Microorganisms include bacteria, protozoans, and certain algae and fungi. See Note at germ.
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