Surfaces

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Imaginary \Im*ag"i*na*ry\, a. [L. imaginarius: cf. F.
     imaginaire.]
     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;
          illusive.
          [1913 Webster]