noun
- a living thing that is too small to be seen without a microscope, such as bacteria, viruses, or fungi
Usage: scientific
Examples
- Bacteria are common microorganisms found in soil.
- The scientist studied microorganisms under a powerful microscope.
- Some microorganisms can cause disease in humans.
- Beneficial microorganisms help break down organic matter.
- The water sample contained several types of microorganisms.
- Antibiotics are used to kill harmful microorganisms.
- Microorganisms play important roles in food production.