"HCI" stands for Human-Computer Interaction. It is a field of study focused on the design and use of computer technology, emphasizing the interactions between people and computers. HCI explores how users interact with systems, aiming to improve usability and user experiences. It encompasses various disciplines, including computer science, psychology, and design, to create interfaces that are intuitive and user-friendly. Effective HCI design can significantly impact software adoption and user satisfaction, making it a critical aspect of software and product development.