Biquadratic

3 definitions found

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

  Biquadratic \Bi`quad*rat"ic\, a. [Pref. bi- + quadratic: cf. F.
     biquadratique.] (Math.)
     Of or pertaining to the biquadrate, or fourth power.
     [1913 Webster]
  
     {Biquadratic equation} (Alg.), an equation of the fourth


        degree, or an equation in some term of which the unknown
        quantity is raised to the fourth power.
  
     {Biquadratic root of a number}, the square root of the square
        root of that number. Thus the square root of 81 is 9, and
        the square root of 9 is 3, which is the biquadratic root
        of 81. Hutton.
        [1913 Webster]

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

  Biquadratic \Bi`quad*rat"ic\, n. (Math.)
     (a) A biquadrate.
     (b) A biquadratic equation.
         [1913 Webster]

From WordNet (r) 2.0 [wn]:

  biquadratic
       adj : of or relating to the fourth power
       n 1: an algebraic equation of the fourth degree [syn: {biquadrate},
             {quartic}, {fourth power}]
       2: an equation of the fourth degree [syn: {biquadratic equation}]
       3: a polynomial of the fourth degree [syn: {biquadratic
          polynomial}, {quartic polynomial}]