Imaginary Number Definition
 ĭ-măjə-nĕrē 
    noun
  
 A complex number in the form a + bi where b is not zero: when a is zero, it is a pure imaginary number.
 Webster's New World 
Synonyms: 
  
- imaginary
- complex quantity
- complex-number
Other Word Forms of Imaginary Number
Noun
Singular:
 imaginary numberPlural:
 imaginary-numbersImaginary Number Is Also Mentioned In
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