Quaternity

//kwəˈtɜː(ɹ)nɪti// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A group or set of four. countable
  2. 2
    the cardinal number that is the sum of three and one wordnet
  3. 3
    The state of being four. uncountable

Synonyms

All synonyms
quartettetrad4fourfourfourness

Etymology

From quatern + -ity, from Latin quaternitās, from quaternus (“fourfold, in fours”).

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