What term refers to an individual computer that is connected to a network?

The term that refers specifically to an individual computer connected to a network is "Node." In networking terminology, a node is any active electronic device that can send, receive, or forward information such as computers, printers, and routers. Thus, every device connected to a network, including personal computers, is classified as a node.

While "Client" is often used to describe a device that accesses services from a server within a client-server architecture, it does not encompass the broader definition of all connected devices. A "Server" refers to a computer system providing services or resources to other systems on the network, and a "Gateway" is a network point that acts as an entrance to another network, often involving translation between different protocols.

Therefore, in the context of the question, the most accurate term for an individual computer connected to a network is "Node."