Neo-Pythagoreanism, a philosophical movement that emerged during the first century AD and influenced the development of Hellenistic philosophy, is a concept that has many synonyms. Some of the synonyms for Neo-Pythagoreanism include Pythagorean revival, modern Pythagoreanism, Pythagoreanism reborn, and New Pythagoreanism. Other synonyms for the term include contemporary Pythagoreanism, updated Pythagoreanism, and modernized Pythagoreanism. In essence, all of these synonyms refer to a modern interpretation of the ancient Pythagorean philosophy, which is characterised by an emphasis on the importance of numbers, mathematics, and harmony in the natural world. Regardless of the terminology used, Neo-Pythagoreanism remains an important philosophical concept that continues to influence modern debates about the nature of reality and the role of mathematics and science in our understanding of the universe.