Eledoisin refers to a peptide hormone that can be synthesized in the human body. However, it can also be found in the skin of octopuses and other marine creatures. This hormone plays a crucial role in the regulation of blood pressure. As for synonyms for the term eledoisin, there are not many options available. The hormone has a molecular formula of C54H85N13O15S, which is unique and complex, making it difficult to find a substitute term. However, synonyms for peptides or hormones that are similar in structure or function to eledoisin may include angiotensin, bradykinin, and vasopressin.