The term "arteria pancreaticoduodenalis inferior" refers to an artery that supplies blood to the pancreas and the duodenum. However, when looking for synonyms for this phrase, it is essential to focus on the individual parts of the term. For instance, the word "arteria" can be substituted with "blood vessel" or "vein". "Pancreaticoduodenalis" could be replaced by "pancreatic" or "duodenal". Lastly, "inferior" can be interchanged with "lower" or "underneath". In conclusion, potential synonyms for "arteria pancreaticoduodenalis inferior" could be "lower pancreatic blood vessel" or "inferior duodenal vein", which convey a similar meaning in a concise manner.