Lazzaro Spallanzani was an Italian biologist and physiologist who made significant contributions to the fields of anatomy and zoology. He was also a pioneer in the study of reproduction and respiration in animals. Some synonyms for Spallanzani include a scientist, researcher, scholar, biologist, physiologist, experimentalist, and naturalist. He is also considered a polymath due to his wide-ranging knowledge and interests. Spallanzani's work on the fertilization of eggs and the role of sperm in reproduction helped lay the groundwork for later scientific breakthroughs. His contributions to science and medicine continue to be studied and celebrated today.