What does "quaternary" mean?
Quaternary: (Geol.) Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man.
Additional senses
- 2.The number four. Boyle.
- 3.(Geol.) The Quaternary age, era, or formation. See the Chart of Geology.
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00