Phrase guide

canonical form

noun · 3 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

A standard or normal presentation of a mathematical entity or a text string, etc.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

Examples

  • A canonical form is an element of a set of representatives of equivalence classes of forms such that there is a function or procedure which projects every element of each equivalence class onto that one element, the canonical form of that equivalence class. The canonical form is expected to be simpler than the rest of the forms in some way. For example, for cubic polynomials acted upon by the group of translations along the abscissa, the canonical forms are cubic polynomials without a quadratic term.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any of a set of representations of the resonance structure of a molecule each of which contributes to the real structure; a contributing structure.

Definition source: English Wiktionary via Wiktextract

Usage: countable, physical, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Synonym of dictionary form.

Definition source: English Wiktionary via Wiktextract

Usage: countable, rare, uncountable

Topics: human-sciences, linguistics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: dictionary form

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

13 source translations are retained for this English entry.

  • Czech: kanonický tvar — standard or normal presentation of a mathematical entity
  • Finnish: kanoninen muoto — standard or normal presentation of a mathematical entity
  • Finnish: normaalimuoto — standard or normal presentation of a mathematical entity
  • French: forme canonique — standard or normal presentation of a mathematical entity
  • German: Normalform — standard or normal presentation of a mathematical entity
  • Polish: postać kanoniczna — standard or normal presentation of a mathematical entity
  • Portuguese: forma canônica — standard or normal presentation of a mathematical entity
  • Russian: канони́ческая фо́рма (kanoníčeskaja fórma) — standard or normal presentation of a mathematical entity
  • Polish: postać kanoniczna — chemistry: any of a set of representations of the resonance structure of a molecule
  • Polish: forma słownikowa — linguistics: dictionary form
  • Polish: lemma — linguistics: dictionary form
  • Polish: lemmat — linguistics: dictionary form
  • Polish: hasło — linguistics: dictionary form