Quaternary (disambiguation)
The Quaternary is a geologic period.
Quaternary (an adjective meaning "fourth in order" or "composed of four items") may also refer to:
- Quaternary (chemistry) (see also Quaternary compound and Quaternary phase)
- Quaternary structure of proteins
- Quaternary sector of the economy, which encompasses knowledge-based services
- Quaternary care, health care that includes highly specialized or experimental treatments
- Quaternary numeral system (base-4) in mathematics
- Quaternary counting system, as used in some human languages
- Quaternary (EP), an album by Mötley Crüe
See also
- All pages with titles beginning with Quaternary
- All pages with titles containing Quaternary
- Quinary, positional number system with base 5
- Ternary (disambiguation)
- Tertiary (disambiguation)
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