imag·i·nary /ɪmˈæʤəˌnɛrɪ/ 形容詞
Im·ag·i·na·ry, n. Alg. An imaginary expression or quantity.
Im·ag·i·na·ry a. Existing only in imagination or fancy; not real; fancied; visionary; ideal.
Wilt thou add to all the griefs I suffer
Imaginary ills and fancied tortures? --Addison.
Imaginary calculus See under Calculus.
Imaginary expression or Imaginary quantity Alg., an algebraic expression which involves the impossible operation of taking the square root of a negative quantity; as, √-9, a + b √-1.
Imaginary points, lines, surfaces, etc. Geom., points, lines, surfaces, etc., imagined to exist, although by reason of certain changes of a figure they have in fact ceased to have a real existence.
Syn: -- Ideal; fanciful; chimerical; visionary; fancied; unreal; illusive.
adj : not based on fact; dubious; "the falsehood about some
fanciful secret treaties"- F.D.Roosevelt; "a small
child's imaginary friends"; "her imagined fame"; "to
create a notional world for oneself" [syn: fanciful,