Spreading activation is a term often used in psychology and neuroscience to describe the process by which neural activity spreads across the brain. There are a number of different synonyms that can be used to describe this phenomenon, depending on the context. Some common synonyms include diffusion, dissemination, propagation, and transmission. Other terms that are often used include spread, circulation, and dissemination. Regardless of the specific terminology that is used, the concept of spreading activation is a critical one in understanding how the brain processes information, and is essential for understanding a wide range of cognitive and neurological processes.