Synonyms: complex number, complex quantity, imaginary, imaginary number
Definition: (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
Similar words: number
Definition: a concept of quantity involving zero and units
Usage: every number has a unique position in the sequence
Synonyms: notional, fanciful, imaginary
Definition: not based on fact; unreal
Usage: the falsehood about some fanciful secret treaties- F.D.Roosevelt; a small child's imaginary friends; to create a notional world for oneself
Similar words: unreal
Definition: lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria
Usage: ghosts and other unreal entities; unreal propaganda serving as news