The mastoid angle, also referred to as the mastoid process, is a bony prominence found behind the ear in humans. It plays a crucial role in the attachment of various muscles and ligaments in the head and neck region. Synonyms for the term "mastoid angle" include mastoid protuberance, mastoid bone, mastoid eminence, and mastoid prominence. These synonyms describe the same anatomical feature, highlighting its prominence and distinct shape. The mastoid angle serves as a landmark for medical professionals, enabling them to identify and assess certain conditions related to the ear, such as infections or fractures.