William Harvey was an English physician who is best known for his contribution to the discovery of the circulation of blood. If you are looking to describe him or his work, there are several synonyms that you can use. For instance, you could refer to him as a scientist, medical doctor, anatomist, or physiologist. Similarly, you could use synonyms such as circulatory system, cardiovascular system, blood flow, or blood circulation to describe his work on the functions of the heart and blood vessels. Other synonyms could include terms such as historic, groundbreaking, revolutionary, pioneering, or seminal to highlight his contributions to the field of medicine.