imaginary part


Definition of imaginary part

: the part of a complex number (such as 3i in 2 + 3i) that has the imaginary unit as a factor

Examples of imaginary part in a Sentence

Recent Examples on the Web In this solution, known as the Argand (or complex) plane, the location of every point is the sum of a real part for its horizontal distance and an imaginary part for its vertical distance from the origin. Quanta Magazine, "How to Find Simple Treasures in Complex Numbers," 14 Feb. 2019 Complex numbers are made up of a real part and an imaginary part. Quanta Magazine, "The (Imaginary) Numbers at the Edge of Reality," 25 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'imaginary part.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of imaginary part

1747, in the meaning defined above

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Time Traveler for imaginary part

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The first known use of imaginary part was in 1747

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Cite this Entry

“Imaginary part.” Dictionary, Merriam-Webster, Accessed 6 Mar. 2021.

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