pDx

PDX is a common abbreviation with multiple uses, of which the most widely recognized is Portland International Airport. Located near Portland, Oregon, in the United States, the airport serves the Portland metropolitan area and handles domestic and international flights. Its IATA code is PDX and its ICAO code is KPDX. The facility opened in 1936 and has since expanded to accommodate growing air travel, becoming a major gateway in the Pacific Northwest. In everyday travel, the code PDX appears in tickets, signage, and online flight information.

In the medical and scientific communities, PDX stands for patient-derived xenograft. This refers to cancer models in which human tumor tissue is implanted into immunodeficient mice to study tumor biology and evaluate potential therapies. PDX models are used to preserve the characteristics of the original human tumors and are considered valuable for translational cancer research.

Beyond aviation and medicine, PDX is occasionally used as shorthand for Portland, Oregon, particularly in travel planning, branding, and online discussions associated with the city. While most readers will encounter PDX in the context of the airport, the acronym has broader visibility in various professional and cultural domains.