The term "Gi Series" refers to a medical procedure that is used to examine the upper gastrointestinal tract. There are many synonyms for this term that can be used interchangeably. Some of the most common synonyms for "Gi Series" include upper GI series, barium swallow, barium meal, and esophagram. Other synonyms for this term include gastrointestinal radiography, fluoroscopy of the upper GI tract, and upper gastrointestinal imaging. Regardless of the specific term used to describe this procedure, it is an important diagnostic tool that can be used to identify a variety of digestive health disorders and conditions.