Spermatogonium is a technical term used to describe the undifferentiated cells that develop into the spermatozoa. As such, there are few colloquial synonyms for this term. However, there are a few scientific synonyms that you may encounter in the process of studying human anatomy or biology. These include: germ cell, sex cell, gamete, precursor cell, and spermatocyte. While these terms are not interchangeable with spermatogonium, they all denote cells that are involved in the process of producing sperm cells. As a student of science, it's important to be familiar with these technical terms to communicate effectively with others in the field.