Unicellular

Pro Tip 1/3

Used mainly in science, especially in biology and microbiology discussions.

In my biology class, we learned that an amoeba is a unicellular organism.

Pro Tip 2/3

Unicellular suggests something is very small, often microscopic.

Even though it's unicellular, this organism can have a huge impact on its environment.

Pro Tip 3/3

Emphasizes simplicity; such organisms typically do not have the complex structure of multicellular ones.

Unicellular creatures like bacteria lack the complex organs found in humans.