현미경으로만 볼 수 있는 아주 작은 생물로, 세균, 바이러스, 곰팡이 등을 포함함.
A living organism that is so small it can only be seen through a microscope, including bacteria, viruses, fungi, and protozoa.
예문:
"The researcher used a powerful microscope to observe the movement of the microorganism in the water sample."
"Some microorganisms are beneficial to human health, while others can cause infectious diseases."
"The fermentation process is driven by the activity of specific microorganisms like yeast."