involving the fourth, but no higher, power of the unknown or variable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use biquadratic in a sentence
When a biquadratic equation has all its terms, its resolution may be always reduced to that of a cubic equation.
Tartaglia solved the cubic equation, and a little later Ferrari solved the biquadratic.Outlines of Educational Doctrine | John Frederick Herbart
biquadratic, bī-kwod-rat′ik, n. a quantity twice squared, or raised to the fourth power.
British Dictionary definitions for biquadratic
of or relating to the fourth power
a biquadratic equation, such as x 4 + x + 6 = 0
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012