Biquadratic Definition
bīkwŏdrătĭk
adjective
Of or relating to the fourth degree.
American Heritage
Of or involving the fourth power of a quantity.
Webster's New World
(mathematics) Of a polynomial expression, involving only the second and fourth powers of a variable, as x^{4} + 3x^{2} + 2. Sometimes extended to any expression involving the biquadrate or fourth power (but no higher powers), as x^{4} − 4x^{3} + 3x^{2} − x + 1.
Wiktionary
noun
An algebraic equation of the fourth degree.
American Heritage
Such a quantity.
Webster's New World
An algebraic equation of the fourth power; quartic equation.
Webster's New World
(mathematics) A biquadratic equation.
Wiktionary
Synonyms:
 quartic
 fourth power
 biquadrate
 biquadratic equation
 quartic polynomial
 biquadratic polynomial
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Other Word Forms of Biquadratic
Noun
Singular:
biquadratic
Plural:
biquadraticsOrigin of Biquadratic

bi + quadratic
From Wiktionary
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