Simple Definition of microorganism
biology : an extremely small living thing that can only be seen with a microscope
Full Definition of microorganism
: an organism (as a bacterium or protozoan) of microscopic or ultramicroscopic size
Origin of microorganism
International Scientific Vocabulary
First Known Use: 1880
MICROORGANISM Defined for Kids
Definition of microorganism
: a living thing (as a bacterium) that can only be seen with a microscope
Medical Definition of microorganism
: an organism of microscopic or ultramicroscopic size
Learn More about microorganism
Medical Dictionary: Definition of "microorganism" Spanish Central: Translation of "microorganism" Nglish: Translation of "microorganism" for Spanish speakers Britannica.com: Encyclopedia article about "microorganism"
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