1. the state of being parallel or of corresponding in some way: "Greek thinkers who believed in the parallelism of microcosm and macrocosm"
▪ the use of successive verbal constructions in poetry or prose which correspond in grammatical structure, sound, meter, meaning, etc.: "parallelism suggests a connection of meaning through an echo of form"
▪ the use of parallel processing in computer systems:"massive parallelism gives neural networks a high degree of fault tolerance"