Microzoons are small, single-celled organisms that are found in a variety of environments, including soil, water, and air. There are several synonyms for the word microzoon, including microbe, microorganism, and protozoan. While microzoon is typically used to refer to a specific type of microbe, protozoan is a general term that can refer to any single-celled organism that is not a bacteria or virus. Other synonyms for microzoon include bacterium, virus, and fungus. Regardless of the term used, these tiny organisms play an important role in the ecology of our planet and have significant implications for human health and disease.