Quaternary (disambiguation)

Look up quaternary in Wiktionary, the free dictionary.

Quaternary may refer to:

Quaternary (or quartary), the fourth geologic time period
The fourth Ordinal number (linguistics), coming after Tertiary
Quaternary numeral system (base-4) in mathematics
- Quaternary counting system in linguistics
- Quaternary Communications Encoding, a method using 4 physical signal levels, such as 2B1Q encoding.
Quaternary (EP), an extended play recording by Mötley Crüe
Quaternary structure in structural biology
Quaternary compound, in which an atom, usually carbon, is attached to four other atoms
- Quaternary ammonium cation
Quaternary sector of the economy, which encompasses knowledge-based services
Quaternary stress, a proposed degree of stress in linguistics

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