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microorganism

microorganism

20 5.1
A living thing too small to see without a microscope
  • noun
  • /ˌmaɪkroʊˈɔrɡənɪzəm/
  • Specialized
translation icon : microorganismo
  • A microorganism is so small that it can only be seen under a microscope.
  • pathogenic microorganisms
  • soil microorganisms
  • anaerobic microorganisms

So what we mean by microbes are microorganisms, that means bacteria.

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Examples

  • The diversity of the local strains of microorganisms in a region contributed to the diversity of cheeses in France.

  • These microorganisms do not normally cause disease in a healthy host.

  • OK, The gene we use comes from a microorganism that lives here in the Dead Sea.

  • It's a microorganism which can be dried under certain conditions then... brought back to life with water.

  • And one of the big questions now is what are all those microorganisms doing in the environment?

  • This microorganism can be the most destructive pathogen ever observed.

  • In infectious disease, an increasing number of drugs affect bacteria and other microorganisms.

    Academic text (2011)
  • So we're going to talk about your gut microbiome and all these microorganisms that can affect our body and our health.

  • So probiotics are live microorganisms which confer a health benefit on the host.

  • Bioremediation involves the same microorganisms that cause the slow, natural biodegradation of chemicals in the environment.

    Academic text (1991)

Synonyms

microbe
vsmicroorganism
62 5.1

A very small living thing, like a bacterium, that can cause disease

is broader and neutral not focused on disease or informal use
micro-organism
vsmicroorganism
  • UK
3.9

A very small living thing like bacteria or fungi that you can only see with a microscope

is the same meaning but written without a hyphen

How Complex

human
1.0
animal
1.0
lifeform
5 3.7
multicellular
  • Specialized
3 4.3
microorganism
  • Specialized
20 5.1
single-celled
  • Specialized
8 4.3

Surface Forms

microorganism singular

Morphology

microorganism = organism (transparent) = micro + organism

The meaning is directly built from 'micro' meaning very small and 'organism' meaning a living thing.

Etymology

Microorganism joins micro- 'small' and organism 'a living thing', the same micro- you find in microscope, a tool that helps you see very small things. So a microorganism is a 'small living thing' you usually need a microscope to see.