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imaginary number

Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A complex number in which the imaginary part is not zero.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun complex analysis A number of the form ai, where a is a real number and i the imaginary unit

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1

Etymologies

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Examples

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synonyms (1)

Words with the same meaning

  1. purely imaginary number

hypernyms (1)

Words that are more generic or abstract

  1. number

hyponyms (4)

Words more specific or concrete

  1. complex conjugate
  2. pure imaginary number
  3. real
  4. real number

cross-references (2)

Cross-references

  1. complex number
  2. real number

Comments

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  • Telofy commented on the word imaginary number

    “On every side the walls of stone ascended, so that to look at any one of them was to believe, for a moment at least, that gravity had been twisted until it stood at right angles to its proper self by some sorcerer’s multiplication with imaginary numbers, and the height I saw was properly the level surface of the world.”

    —Gene Wolfe, The Sword of the Lictor

    October 17, 2010