Trypsinogen, also known as pancreatic trypsinogen, is an inactive pancreatic enzyme that plays a crucial role in protein digestion. This enzyme is converted into active trypsin, which breaks down proteins in the small intestine. Synonyms for trypsinogen include trypsin precursor, trypsinogen-1, trypsin-like protease, serine protease, and PRSS1. These terms refer to the same inactive enzyme that is synthesized and secreted by the pancreas. In medical literature, these synonyms are often used interchangeably in various contexts related to trypsinogen, including genetics, physiology, and pathology. By using these synonyms, researchers and clinicians can communicate effectively and avoid confusion when discussing trypsinogen and its functions.