protozoon

[proh-tuh-zoh-on, -uhn]

noun

plural

protozoa 

1. protozoan.

Word History and Origins

Origin of protozoon¹

Singular of Protozoa

Example Sentences

When balance is disturbed—by anything from indigestion in a protozoon up to a storm on the ocean where he lives, there is a catastrophe.

From Project Gutenberg

On the surface of the sponge I have found a peculiar protozoon which resembles the European Trichodina spongill� in general structure but belongs, I think, to a distinct species, if not to a distinct genus.

From Project Gutenberg

You open another book idly, and you see: Organic life, we are told, has developed gradually from the protozoon to the philosopher, and this development, we are assured, is indubitably an advance.

From Project Gutenberg

This protozoon secretes a shell about itself which has a characteristic shape, and often carries spines.

From Project Gutenberg

Instead of comparing with a mammal at the top of the organic scale, it is like a formless, undifferentiated protozoon at the bottom.

From Project Gutenberg