"Belters" refers to the inhabitants of the asteroid belt in the Solar System, particularly those living in space stations and colonies. They are known for their unique culture, which has developed due to the low-gravity environment of the belt. Belters often have distinct dialects and customs that set them apart from people living on Earth or Mars. The term "Belter" is also popularized in the science fiction series The Expanse, where it describes the working-class people who mine asteroids for resources. Their lifestyle is heavily influenced by the challenges of living in space, leading to a strong sense of community and resilience among them.