1. (mathematics) involving the fourth and no higher power of a quantity or degree
   "The equation xbiquadratic4 + 2xbiquadratic2 + 1 = 0 is a biquadratic equation"

1. An algebraic equation or function of the fourth degree
   "The mathematician solved the biquadratic equation";
   - biquadrate, quartic, fourth power
    
2. An equation of the fourth degree
   "Solving the biquadratic equation x⁴ - 5x² + 4 = 0 required advanced algebraic techniques";
   - biquadratic equation
    
3. A polynomial of the fourth degree
   "The quartic polynomial xbiquadratic4 + 2x^2 + 1 has no real roots";
   - biquadratic polynomial, quartic polynomial

Derived forms: biquadratics

Type of: equation, multinomial, number, polynomial

Encyclopedia: Biquadratic