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Parallelism (grammar) In grammar, parallelism, also known as parallel structure or parallel construction, is a balance within one or more sentences of similar phrases or clauses that have the same grammatical structure. The application of parallelism improves writing style and readability, and is thought to make sentences easier to process.
parallel, programming. A situation where two or more processes are unable to proceed because each is waiting for one of the others to do something. A common example is a program waiting for output from a server while the server is waiting for more input from the controlling program before outputting anything.