Definition of microorganism
: an organism (such as a bacterium or protozoan) of microscopic or ultramicroscopic size
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Recent Examples of microorganism from the Web
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Then Gehrig said Spaniak suggested studying the impact of weightlessness on Hydra, an immortal microorganism.
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Studying these sponges, scientists have identified about 19,000 microorganisms that live in these sponges.
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In the late 1800s, the German-Austrian pediatrician Theodor Escherich gathered scientific evidence that microorganisms are part of the normal human system.
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The algae bloom is filled with glowing phytoplankton that lights up when the microorganisms tumble down the face of waves at and near the shore.
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The idea behind synbiotics is that adding prebiotics to a probiotic supplement can help ensure that the digestion-friendly microorganisms arrive in the gut alive and well.
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The farms that raise the dairy animals, the hands of the cheesemakers, the microorganisms that convert milk into thousands of distinctly different, cheesy delights are all a part of what makes cheese special.
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Rotate crops and apply plenty of compost, which is rich in predatory microorganisms.
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In some cases, even washing one’s hands with tap water and failing to dry them properly can transmit the microorganism — which, says Haberman, is all the more reason to consider daily disposable lenses.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'microorganism.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of microorganism
International Scientific Vocabulary
MICROORGANISM Defined for English Language Learners
Definition of microorganism for English Language Learners
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biology : an extremely small living thing that can only be seen with a microscope
MICROORGANISM Defined for Kids
Definition of microorganism for Students
: a living thing (as a bacterium) that can only be seen with a microscope
Medical Dictionary
Learn More about microorganism
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Spanish Central: Translation of microorganism Nglish: Translation of microorganism for Spanish speakers Britannica.com: Encyclopedia article about microorganism
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