imaginary part
noun Mathematics.
the coefficient b in the complex number a + bi.
Compare
real part.
Origin of imaginary part
First recorded in 1925–30
Words nearby imaginary part
imaginable,
imaginal,
imaginary,
imaginary axis,
imaginary number,
imaginary part,
imaginary unit,
imagination,
imaginative,
imagine,
imagineer
British Dictionary definitions for imaginary part
imaginary part
noun
the coefficient b in a complex number a + i b, where i = √–1