The term "5nm" refers to a semiconductor manufacturing process that produces transistors with a size of 5 nanometers. This small size allows for more transistors to fit on a chip, enhancing performance and energy efficiency. It is a key technology in modern electronics, enabling faster and more powerful devices. Companies like Intel and TSMC are leading the way in 5nm technology, which is crucial for advanced processors used in smartphones, computers, and other devices. The smaller size of transistors helps improve speed and reduce power consumption, making devices more efficient and capable of handling complex tasks.