quaternary

Fetched 2026-10-26 (cache).

Synonyms: quarternary, quaternity, quaternate

Antonyms: quarternary, quaternity, quaternate

Related words from Datamuse; suggestions, not definitions.

Adjective

1. Of fourth [[rank]] or [[order]].
2. Of a [[mathematical]] [[expression]] containing e.g. x⁴.
3. Relating to or in number base four.
4. {{lb|en|organic chemistry}} having a [[quaternary ammonium]] group.
5. {{lb|en|inorganic chemistry}} Composed of four elements.

Noun

1. {{lb|en|chemistry}} A [[quaternary compound]].
2. {{lb|en|geology}} The [[Quaternary]] period or the system of [[deposits]] laid down during it.

Proper noun

1. {{lb|en|geology}} The [[geological]] [[period]] of the [[Cenozoic]] Era immediately following the [[Tertiary]]. {{ng|It is subdivided into the [[Pleistocene]] and the [[Holocene]] Epochs.}}
2. {{alt case form|en|quaternary}}.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.