RPI is a commonly used term in the field of engineering, which stands for "Rochester Polytechnic Institute." However, RPI is also used as an acronym for several other terms in different fields. For instance, it can also mean "Rapid Prototype Injection" in manufacturing, "Retail Price Index" in economics, or "Rotations Per Minute" in mechanics. In computing, it could stand for "Remote Procedure Invocation" and "Raspberry Pi" - a famous single-board computer. Moreover, RPI can be expanded as "Respiratory Performance Index" in the medical field and as "Real Property Inventory" in the property management industry. Understanding the context of usage is essential to interpret the meaning of RPI accurately.