Microorganism meaning

mīkrō-ôrgə-nĭzəm
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Any microscopic or ultramicroscopic animal, plant, bacterium, virus, etc.
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An organism or infectious agent of microscopic or submicroscopic size, especially a bacterium or protozoan.
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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.
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(microbiology) An organism that is too small to be seen by the unaided eye, especially a single-celled organism, such as a bacterium.

The cud is then reswallowed and further digested by specialized microorganisms that live in the rumen.

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Origin of microorganism

  • From micro- +"Ž organism.

    From Wiktionary