Standard Lemma guide

biquadratic

adj · noun · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

adj

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A biquadratic equation.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adjective

Meaning 3

of or relating to the fourth power

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

a polynomial of the fourth degree

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: biquadratic polynomial, quartic polynomial

Antonyms: none provided

Broader terms: polynomial, multinomial

5

noun

Meaning 5

an equation of the fourth degree

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: biquadratic equation

Antonyms: none provided

Broader terms: equation

6

noun

Meaning 6

an algebraic equation of the fourth degree

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: biquadrate, quartic, fourth power

Antonyms: none provided

Broader terms: number

History

Etymology

Etymology tree Proto-Indo-European *dwóh1 Proto-Indo-European *dwi- Proto-Italic *dwi- Latin bi-bor. English bi- French quadratiquebor. English quadratic English biquadratic From bi- + quadratic.

Across languages

Translations

4 source translations are retained for this English entry.

  • Finnish: bikvadraattinen — Translations
  • French: bicarré — Translations
  • Polish: bikwadratowy — Translations
  • Polish: dwukwadratowy — Translations