| biquadrate | (n) an algebraic equation of the fourth degree, Syn. fourth power, quartic, biquadratic |
| Biquadrate | n. [ Pref. bi- + quadrate. ] (Math.) The fourth power, or the square of the square. Thus 4x4=16, the square of 4, and 16x16=256, the biquadrate of 4. [ 1913 Webster ] |