noun

microorganism

microorganism

Bacteria are a type of microorganism.

Bacteria are a type of microorganism.

Some microorganisms can cause disease.

Some microorganisms can cause disease.

((a/an microorganism)) a microorganism A microorganism is a living thing.

Synonyms: microbe, germ, bacterium

From Greek 'mikros' (small) + 'organismos' (organism). It literally means 'small living being'.

Think of a 'micro' (tiny) 'organism' that you can only see with a microscope.

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