adjective
- consisting of four parts or elements
- fourth in order or rank
- relating to the most recent geological period
Usage: geology
noun
- a group or set of four
- the Quaternary period in geological time
Usage: geology
Examples
- The quaternary structure of proteins involves four subunits.
- She held a quaternary position in the company hierarchy.
- Quaternary deposits contain fossils from the ice age.
- The quaternary alliance strengthened their negotiating power.
- Scientists study Quaternary climate changes to understand global warming.
- The quaternary system uses base four instead of base ten.
- Quaternary ammonium compounds are used as disinfectants.