The sternal line, also known as the midline of the sternum, refers to the imaginary vertical line that divides the sternum into two equal halves. Synonyms for this term include mid-sternal line, midline of the chest, or simply the median line. It is an important anatomical reference point used in various medical fields. The sternal line serves as a guide for locating specific structures during procedures, such as central line placement or chest tube insertion. Understanding the synonyms for sternal line is crucial for effective communication and precise anatomical reference in the medical field.