Osteopetrosis is a genetic disease that causes the bones to become denser and more brittle than usual. There are several synonyms for this condition, including marble bones disease, Albers-Schönberg disease, and osteosclerosis. The term osteopetrosis comes from the Greek words "osteo" meaning bone, and "petros" meaning stone. This name is fitting, as the denser bones of those with this condition can appear stone-like on medical imaging. Despite the name differences, all of these terms refer to the same condition that inhibits bone remodeling, leading to complications such as frequent fractures, poor vision, and hearing loss. Early diagnosis and treatment of osteopetrosis can help reduce the risk of these complications and improve quality of life.