Periosteal reaction is a medical term used to describe a response of the periosteum, the dense connective tissue covering the bones. It is often used to describe abnormal or excessive growth or activity of the bone tissue. For medical professionals, it is important to have alternate ways to describe this phenomenon to ensure clear communication with colleagues and patients. Synonyms for periosteal reaction may include cortical thickening, bone apposition, reactive bone formation, and new bone growth. Other terms used in this context could be bone remodeling, osteogenesis, and ossification. By using these alternate terms, medical professionals can communicate information about bone growth and activity in a clear and concise manner.