Polyostotic refers to a medical condition that affects multiple bones in the body. Synonyms for polyostotic include multifocal, multilocal, and multiple bone lesions. These terms are often used interchangeably to describe conditions that affect several bones at the same time. Another synonym could be osteodysplasia, which refers to abnormal bone growth or development. Polyostotic conditions can arise from a variety of factors, including genetic mutations, childhood diseases, and metabolic disorders. It's important to properly diagnose and treat polyostotic conditions to prevent further damage to the affected bones and surrounding tissues.