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microbe

/ˌmaɪˈkroʊb/
IPA guide

Other forms: microbes

Microbe is a somewhat outdated way for scientists to talk about the tiny bugs that cause diseases. When you get the flu, you can blame a microbe.

In the nineteenth century, the idea that germs caused illness was brand new, and doctors referred to both germs and microbes interchangeably. The word microorganism is more scientifically precise, and in fact microbe is a shortened form of that long, Greek-rooted word. Mikro means "small," and in microbe it's combined with bios, or "life."

Definitions of microbe
  1. noun
    a minute life form (especially a disease-causing bacterium); the term is not in technical use
    synonyms: bug, germ
    see moresee less
    type of:
    micro-organism, microorganism
    any living thing that is too small to be seen with the naked eye
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