PCE is a highly versatile acronym with distinct meanings across numerous fields, from economics to politics. In economics, it stands for the Personal Consumption Expenditures price index, a crucial gauge of inflation used by central banks. In chemistry and engineering, it refers to tetrachloroethylene (a common dry-cleaning solvent) and eticyclidine (an illegal dissociative drug), while in computing it is famously associated with the PC Engine video game console released by NEC and Hudson Soft in 1987. Politically, it is most prominently the abbreviation for the Communist Party of Spain (Partido Comunista de España) and its various historical factions. The acronym also appears in medicine (prenatal cocaine exposure), as a language code for Palaung, and in organizations like New Zealand's Parliamentary Commissioner for the Environment. Because of this wide range of applications, understanding the context is essential to correctly interpret what PCE stands for.