Parallelism may refer to: Angle of parallelism, the angle at one vertex of a right hyperbolic triangle that's two hyperparallel sides Conscious parallelism, price-fixing between competitors in an oligopoly that occurs without an actual spoken agreement between the parties Parallelism (computing), the simultaneous execution of some combination of multiple instances of programmed instructions and data on multiple processors Parallelism (grammar), a balance of two or more similar words, phrases… (More on Parallelism)