Hyperbolical

1 definition found

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

  Hyperbolic \Hy`per*bol"ic\, Hyperbolical \Hy`per*bol"ic*al\, a.
     [L. hyperbolicus, Gr. ?: cf. F. hyperbolique.]
     1. (Math.) Belonging to the hyperbola; having the nature of
        the hyperbola.
        [1913 Webster]
  


     2. (Rhet.) Relating to, containing, or of the nature of,
        hyperbole; exaggerating or diminishing beyond the fact;
        exceeding the truth; as, an hyperbolical expression. "This
        hyperbolical epitaph." --Fuller.
        [1913 Webster]
  
     {Hyperbolic functions} (Math.), certain functions which have
        relations to the hyperbola corresponding to those which
        sines, cosines, tangents, etc., have to the circle; and
        hence, called {hyperbolic sines}, {hyperbolic cosines},
        etc.
  
     {Hyperbolic logarithm}. See {Logarithm}.
  
     {Hyperbolic spiral} (Math.), a spiral curve, the law of which
        is, that the distance from the pole to the generating
        point varies inversely as the angle swept over by the
        radius vector.
        [1913 Webster]