The term esophageal hiatus refers to an opening in the diaphragm that allows the esophagus to pass through. There are several synonyms for this anatomical structure, including esophageal opening, esophageal aperture, esophageal foramen, and esophageal canal. While the term esophageal hiatus is commonly used in medical literature, it is important for healthcare practitioners to be familiar with all of these synonyms in order to effectively communicate and understand clinical findings and procedures. Anatomical knowledge of the esophageal hiatus is crucial in the diagnosis and treatment of disorders related to the esophagus and stomach.