- Consisting of four; by fours, or in sets of four. - Later than, or subsequent to, the Tertiary;
Post-tertiary; as, the Quaternary age, or Age of man.
2 . Quaternary
[ n.]
- The number four. - The Quaternary age, era, or formation. See the Chart of
Geology.
Meaning of 'quaternary' (Princeton's WordNet)
1 . quaternary
[ s]
Meaning (1): - consisting of or especially arranged in sets of four
Example in sentence:
a quaternary compound;
quaternate leaves
Meaning (2): - coming next after the third and just before the fifth in position or time or degree or magnitude
Example in sentence:
the quaternary period of geologic time extends from the end of the tertiary period to the present