Overview of noun imaginary

The noun imaginary has 1 sense

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

Overview of adj imaginary

The adj imaginary has 1 sense

• fanciful, imaginary, notional -- (not based on fact; unreal; "the falsehood about some fanciful secret treaties"- F.D.Roosevelt; "a small child's imaginary friends"; "to create a notional world for oneself")