quaternity

noun

qua·ter·ni·ty kwə-ˈtər-nə-tē

kwä-

plural quaternities

: a union of a group or set of four

Word History

Etymology

Late Latin quaternitas, from Latin quaterni four each

First Known Use

1529, in the meaning defined above

Time Traveler

The first known use of quaternity was in 1529

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Browse Nearby Words

quaternion

quaternity

quaterphenyl

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Cite this Entry

Style

“Quaternity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quaternity. Accessed 4 Nov. 2025.

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