noun · 5 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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Received-Pronunciation:/kwəˈtɜːnɪti/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/kwɑˈtɜɹnəti/
General-American:[-ɾi]
General-American:Recorded audio is listed in the source snapshot.
rhymes with -ɜː(ɹ)nɪti
1
noun
Meaning 1
A group or set of four; a foursome, a quartet.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Definition source: English Wiktionary via Wiktextract
Usage: countable, obsolete, rare, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: quarter
Antonyms: none provided
4
noun
Meaning 4
Synonym of fourness (“the property or state of being four in number”).
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: fourness, quaternity
Antonyms: none provided
5
noun
Meaning 5
the cardinal number that is the sum of three and one
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: four, 4, IV, tetrad, quatern, quaternion, quaternary, quartet, quadruplet, foursome, Little Joe
Antonyms: none provided
Broader terms: digit, figure
History
Etymology
Etymology tree Proto-Indo-European *kwetwóresder. Latin quater Latin -nus Latin quaternus Proto-Indo-European *-teh2 Proto-Indo-European *-ts Proto-Indo-European *-teh2ts Proto-Italic *-tāts Latin -tās Late Latin quaternitāslbor. Old French quaternité Middle French quaternitélbor. ▲ Late Latin quaternitāslbor. English quaternity Learned borrowing from Middle French quaternité (“set of four things; (Christianity) dogma that there are four persons in the Godhead”), from Old French quaternité (modern French quaternité); and from their etymon Late Latin quaternitās (“set of four things; (Christianity) group of four persons in the Godhead”) (modelled after trīnitās (“triad; (Christianity) the Trinity”)) + English -ity (suffix forming abstract nouns). Quaternitās is derived from Latin quaternī + -tās (suffix forming abstract nouns denoting states of being); and quaternī is an inflection of quaternus (“four at a time; fourfold”), from quater (“four times”) (from Proto-Indo-European *kwetwóres (“four”)) + -nus (suffix forming distributive numerals). By surface analysis, quatern + -ity.
Across languages
Translations
6 source translations are retained for this English entry.
Italian:
quaternità
— group or set of four (cognates) — see also foursome, quartet
Latin:
quaternitās
— group or set of four (cognates) — see also foursome, quartet
Polish:
kwartet
— group or set of four (cognates) — see also foursome, quartet
Finnish:
nelinäisyys
— group of four persons forming the Godhead
Polish:
czwórka
— group of four persons forming the Godhead
Polish:
czwórca
— group of four persons forming the Godhead