Final answer:
A process is in the 'waiting' or 'blocked' state when it is in main memory and waiting for an event. This term is related to computer processes in operating systems where a process awaits resources or an event to proceed.
Step-by-step explanation:
A process is in the waiting or blocked state when it is in main memory and awaiting an event. This is often discussed in the context of operating systems and computer processes, rather than a thermodynamic process. In multitasking computer systems, a process is any program that is being executed by one or many threads.
When a process is in the waiting state, it cannot progress until a specific event occurs or a resource it needs becomes available. This could include events like input from the user or data from a disk read.
The process is in the waiting state when it is in main memory and awaiting an event. In computer science, there are several states a process can be in, such as ready, running, and blocked/waiting. The waiting state indicates that the process is in main memory, but it is not currently executing. It is waiting for a particular event or resource to become available.