biquadratic

Noun	1.	biquadratic - an algebraic equation of the fourth degree biquadrate, fourth power, quartic number - a concept of quantity derived from zero and units; "every number has a unique position in the sequence"
	2.	biquadratic - an equation of the fourth degree biquadratic equation equation - a mathematical statement that two expressions are equal
	3.	biquadratic - a polynomial of the fourth degree biquadratic polynomial, quartic polynomial multinomial, polynomial - a mathematical expression that is the sum of a number of terms
Adj.	1.	biquadratic - of or relating to the fourth power

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