The term 'connecting device' can be summarized as an adaptor, which is a seven-letter word. An adaptor is a device that allows two different types of connections to be joined together. It is often used to connect two different types of cables or plugs, such as a USB cable and an HDMI cable. Adaptors are also used to connect two different types of devices, such as a laptop and a printer. Adaptors are essential for connecting different types of devices and cables, allowing them to communicate with each other.