Synonyms of imaginary

Noun

1. complex number, complex quantity, imaginary number, imaginary, number

usage: (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1

Adjective

1. fanciful, imaginary, notional, unreal (vs. real)

usage: 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"

Definition and meaning of imaginary (Dictionary)