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4 definitions found
 for Imaginary
From The Collaborative International Dictionary of English v.0.48 :

  Imaginary \Im*ag"i*na*ry\, a. [L. imaginarius: cf. F.
     Existing only in imagination or fancy; not real; fancied;
     visionary; ideal.
     [1913 Webster]
           Wilt thou add to all the griefs I suffer
           Imaginary ills and fancied tortures?     --Addison.
     [1913 Webster]
     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, [root]-9, a + b [root]-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;
          [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Imaginary \Im*ag"i*na*ry\, n. (Alg.)
     An imaginary expression or quantity.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

      adj 1: 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" [syn: fanciful, imaginary, notional]
      n 1: (mathematics) a number of the form a+bi where a and b are
           real numbers and i is the square root of -1 [syn: complex
           number, complex quantity, imaginary number,

From Moby Thesaurus II by Grady Ward, 1.0 :

  123 Moby Thesaurus words for "imaginary":
     Barmecidal, Barmecide, abstract, air-built, airy, algorismic,
     algorithmic, aliquot, apparent, apparitional, autistic, cardinal,
     chimeric, chimerical, cloud-built, deceptive, decimal, delusional,
     delusionary, delusive, delusory, dereistic, differential, digital,
     dreamlike, dreamy, erroneous, ethereal, even, exponential,
     fallacious, false, fancied, fanciful, fantastic, fatuitous,
     fatuous, fictional, fictitious, fictive, figmental, figural,
     figurate, figurative, finite, fractional, gaseous, gossamery,
     hallucinatory, hypothetical, ideal, illusional, illusionary,
     illusive, illusory, imaginational, imaginative, imagined,
     immaterial, impair, impossible, infinite, integral, irrational,
     legendary, logarithmic, logometric, made-up, merely nominal,
     misleading, mythic, mythical, mythological, negative, nonexistent,
     not real, notional, numeral, numerary, numerative, numeric, odd,
     ordinal, ostensible, pair, phantasmagoric, phantasmal, phantasmic,
     phantom, phantomlike, positive, possible, prime, quixotic, radical,
     rarefied, rational, real, reciprocal, seeming, self-deceptive,
     self-deluding, shadowy, specious, spectral, spirituous,
     submultiple, subtile, subtle, supposititious, surd, tenuous,
     transcendental, unactual, unfounded, unreal, unrealistic,
     unsubstantial, untrue, vaporous, visional, visionary, windy

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