protozoa
/ˌproʊtəˈzoʊə/
noun
- A group of single-celled microscopic organisms that live in water or soil, some of which can cause diseases.
- Pond water is full of protozoa that can be seen under a microscope.
- Some protozoa, like the one that causes malaria, are harmful to humans.
- Protozoa feed on bacteria and other tiny particles in the environment.
Synonyms