"Threaded" refers to a method of organizing discussions or messages in a way that allows users to follow conversations more easily. In a threaded format, replies to a specific message are grouped together, creating a visual hierarchy that shows which responses relate to which original posts. This is commonly used in online forums, email chains, and social media platforms. In programming, "threaded" can also describe a technique where multiple sequences of instructions, or threads, run concurrently within a single program. This allows for more efficient use of resources, as tasks can be processed simultaneously, improving performance in applications like web servers and multimedia processing.