# Biquadratic root of a number

- Biquadratic root of a number
- 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]

*The Collaborative International Dictionary of English.
2000.*

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**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 … The Collaborative International Dictionary of English

**Biquadratic equation** — 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… … The Collaborative International Dictionary of English

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