The cranial base, also known as the skull base, is the bottom portion of the skull that supports the brain and connects it to the spinal cord. There are several synonyms for this term, including the base of the skull, the cranial floor, and the skull floor. Additionally, healthcare professionals may refer to the cranial base as the skull base complex, due to its intricate network of bones, muscles, nerves, and blood vessels. Understanding the anatomy and terminology associated with the cranial base is essential for diagnosing and treating conditions that affect this region, such as skull fractures, brain tumors, and meningitis.