The realm of medical affairs possesses its own distinct language, influencing how knowledge is generated, communicated, and ultimately applied in clinical practice. This lexicon has been developed as a practical resource for healthcare professionals, researchers, and individuals engaged at the intersection of medicine and the pharmaceutical industry. Its primary aim is to offer clear and consistent definitions of the key terms and abbreviations frequently encountered in medical affairs and pharmaceutical processes, fostering informed, evidence-based practices.

Each definition is anchored in authoritative sources, including EMA and FDA guidelines, ISMPP and GPP standards, ISPOR frameworks, and peer-reviewed literature. Collectively, these resources create a valuable reference that we make available freely, reflecting our belief that a shared understanding of medical affairs serves as the cornerstone for enhanced collaboration, stronger scientific pursuits, and ultimately, improved outcomes for patients.