HDMI stands for High-Definition Multimedia Interface. It is a digital audio/video interface that is commonly used to connect devices such as televisions, monitors, and projectors to other devices like computers, gaming consoles, and DVD players. HDMI cables transmit high-quality audio and video **s, allowing for a seamless connection and high-definition display. HDMI supports various video resolutions, including standard definition, high definition, and ultra-high definition. It is the most common interface used for connecting modern audio/video devices.