# Complex Number Definition

kŏmplĕks

noun

Any number expressed as

*a*+*bi*, where*a*and*b*are real numbers and*i*is the imaginary unit, −1: if*b*is zero the expression is a real number, but if*b*is not zero the expression is an imaginary number.Webster's New World

Synonyms:

- imaginary-number
- complex quantity
- imaginary

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## Other Word Forms of Complex Number

### Noun

Singular:

complex number
Plural:

complex-numbers
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