Definition of "parallelism" [par•al•lel•ism]

• The quality or condition of being parallel; a parallel relationship. (noun)
• Likeness, correspondence, or similarity in aspect, course, or tendency. (noun)
• Grammar The use of identical or equivalent syntactic constructions in corresponding clauses or phrases. (noun)
• Philosophy The doctrine that to every mental change there corresponds a concomitant but causally unconnected physical alteration. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Yes, I certainly agree that parallelism is one of the biggest fundamental challenges we have to make more headway on."
• "In my opinion, parallelism is more of a rhetorical technique than an absolute syntactic necessity."
• "Everyone from schoolchildren to undergraduates to businessfolk are exhorted to maintain parallelism in writing and speech:"