quaternary.
Of fourth rank or order.
Meaning & usage
Of fourth rank or order.
the quaternary stress in a pronounced word
Of a mathematical expression containing e.g. x⁴.
Relating to or in number base four.
having a quaternary ammonium group.
Composed of four elements.
Where this word comes from
Derived from Latin quaternārius (“containing or consisting of four”), from quaternī (“four each”, “four at a time”) + -ārius (whence the English suffix -ary); compare the French quaternaire.
A quaternary compound.
The Quaternary period or the system of deposits laid down during it.
Where this word comes from
Derived from Latin quaternārius (“containing or consisting of four”), from quaternī (“four each”, “four at a time”) + -ārius (whence the English suffix -ary); compare the French quaternaire.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.