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real part

American  
[ree-uhl, reel] / ˈri əl, ril /

noun

Mathematics.
  1. the number a in the complex number a + bi.


real part British  

noun

  1. the term a in a complex number a + i b , where i = √–1

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of real part

First recorded in 1960–65

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In the mathematical description of a quantum state, the real part represents the amplitude, while the imaginary part represents the phase.

From Science Daily Jul. 13, 2026

Yet, much like the entire $7.2 trillion federal budget, it is a bit of a phantasm—part real, part fantasy, part nightmare, not likely to materialize in life, except as a warped caricature of itself.

From Slate Mar. 12, 2024

This season was so much about trauma, which is a word that has become a real part of the cultural conversation over the last few years.

From Salon Jan. 17, 2024

“For many people the conflict is still very real, part of their everyday lives,” said O’Neill, who studies trans-generational trauma.

From Los Angeles Times Apr. 16, 2023

“But now it’s gonna be a real part of the turn. It’s gonna pull...”

From "A Confederacy of Dunces" by John Kennedy Toole

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