adj, noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   A biquadratic equation.
2. 2
   a polynomial of the fourth degree wordnet
3. 3
   an equation of the fourth degree wordnet
4. 4
   an algebraic equation or function of the fourth degree wordnet

Adjective

1. 1
   Of a polynomial expression, involving only the zeroth, second, and fourth powers of a variable, as x⁴ + 3x² + 2. Sometimes extended to any expression involving the biquadrate or fourth power (but no higher powers), as x⁴ − 4x³ + 3x² − x + 1. not-comparable

Adjective

1. 1
   involving the fourth and no higher power of a quantity or degree wordnet

Synonyms

All synonyms

biquadratebiquadratebiquadratic equationbiquadratic equationbiquadratic polynomialfoursquare

Etymology

From bi- + quadratic.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.