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View synonyms for microorganism

microorganism

[ mahy-kroh-awr-guh-niz-uhm ]

noun

  1. any organism too small to be viewed by the unaided eye, as bacteria, protozoa, and some fungi and algae.

microorganism

/ ˌmaɪkrəʊˈɔːɡəˌnɪzəm /

noun

  1. any organism, such as a bacterium, protozoan, or virus, of microscopic size

microorganism

/ mī′krō-ôr′gə-nĭz′əm /

  1. 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.
  2. See Note at germ

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Other Words From

  • mi·cro·or·gan·ic [mahy-kroh-awr-, gan, -ik], micro·organ·ismal adjective

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Word History and Origins

Origin of microorganism1

First recorded in 1875–80; micro- + organism

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