3 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Biquadratic \Bi`quad*rat"ic\, a. [Pref. bi- + quadratic: cf F.
biquadratique.] (Math.)
Of or pertaining to the biquadrate, or fourth power.
{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.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Biquadratic \Bi`quad*rat"ic\, n. (Math.)
a A biquadrate.
b A biquadratic equation.
From WordNet r 1.6 [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: and equation of the fourth degree [syn: {biquadratic
equation}]
3: a polynomial of the fourth degree [syn: {biquadratic
polynomial}, {quartic polynomial}]
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