Definition of Quaternary

  • (a.) Consisting of four; by fours, or in sets of four.
  • (a.) Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man.
  • (n.) The number four.
  • (n.) The Quaternary age, era, or formation. See the Chart of Geology.

Antonyms of Quaternary


Homophones of Quaternary


No Antonyms Found.



Common English words

A list of the most frequently used words in the English languge.

Longest English Words

Longest words in the Oxford Dictionary.