microorganism

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microorganism /ˌmaɪkroʊˈoɚgəˌnɪzəm/ noun
plural microorganisms
microorganism
/ˌmaɪkroʊˈoɚgəˌnɪzəm/
noun
plural microorganisms
Learner's definition of MICROORGANISM
[count] biology
: an extremely small living thing that can only be seen with a microscope
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