1. a scientist who studies microorganisms such as bacteria, viruses, fungi, and protozoa

Examples

• The microbiologist examined the bacterial samples under the microscope.
• She works as a microbiologist in a pharmaceutical research laboratory.
• Microbiologists play a crucial role in developing new antibiotics.
• The microbiologist discovered a new species of fungus in the soil sample.
• Many microbiologists specialize in studying disease-causing pathogens.
• He became a microbiologist after studying biology in college.