# imaginary number

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## imaginary number

*n.*

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

## imaginary number

*n*

(Mathematics) any complex number of the form i

*b*, where i = √–1## imag′inary num′ber

*n.*

a complex number having its real part equal to zero.

[1905–10]

## i·mag·i·nar·y number

(ĭ-măj′ə-nĕr′ē) A type of complex number in which the multiple of

*i*(the square root of -1) is not equal to zero. Examples of imaginary numbers include 4*i*and 2 - 3*i*, but not 3 + 0*i*(which is just 3). See more at complex number.ThesaurusAntonymsRelated WordsSynonyms

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Noun | 1. | imaginary number - (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement number - a concept of quantity involving zero and units; "every number has a unique position in the sequence" complex conjugate - either of two complex numbers whose real parts are identical and whose imaginary parts differ only in sign real, real number - any rational or irrational number pure imaginary number - an imaginary number of the form a+bi where a is 0 imaginary part, imaginary part of a complex number - the part of a complex number that has the square root of -1 as a factor |

Translations

**imaginární číslo**

**número imaginario**

**imaginaariluku**

**nombre imaginaire pur**

**מספר מרוכב**

**imaginarni broj**

**imaginárius szám**

**képzetes szám**

**þvertala**

**허수**

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