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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.
noun. Parallelism is the use of corresponding or parallel constructions in writing. 1  When two different sections of a poem have corresponding grammatical structure, sound and meaning, this is an example of parallelism.2  When all bullet points start with a verb, this is an example of parallelism.arallelism is the use of corresponding or parallel constructions in writing. 1  When two different sections of a poem have corresponding grammatical structure, sound and meaning, this is an example of parallelism. 2  When all bullet points start with a verb, this is an example of parallelism.