noun
- single-celled microscopic organisms that are typically able to move and feed on organic matter
Usage: biology; plural form
Examples
- The pond water contained numerous protozoans visible under the microscope.
- Amoebas and paramecia are common types of protozoans studied in biology class.
- Some protozoans can cause diseases in humans and animals.
- The scientist observed how protozoans moved through the water sample.
- Marine protozoans play an important role in ocean food chains.
- Students used high-powered microscopes to identify different protozoans.