microorganisms

1. Organisms so small that they can be seen only through a microscope . ( See bacteria , protozoa , and viruses .)

Example Sentences

Sugar and other ingredients in Halloween treats can cast a sickly spell on the trillions of microorganisms that reside in your gut, collectively known as the gut microbiome.

From Salon

Life was very simple - microorganisms composed of single cells.

From BBC

These miniature springtails, under two millimetres long, are found alongside slime moulds worldwide, munching on microorganisms and playing a key role in soil health.

From BBC

But as it turns out, understanding how microorganisms came to be in Earth’s water is valuable knowledge to those tasked with cleansing that supply today, her mentor at JPL said.

From Los Angeles Times

Research from Queen's University Belfast has shown that seaweed species can fight off the growth of harmful microorganisms in animals, some of which are becoming resistant to antibiotics.

From Salon