Dictionary and Thesaurus

  Definition of Quaternary
  1. the cardinal number that is the sum of three and one
  2. last 2 million years
  3. coming next after the third and just before the fifth in position or time or degree or magnitude; "the quaternary period of geologic time extends from the end of the tertiary period to the present"
  4. consisting of or especially arranged in sets of four; "quaternate leaves"; "a quaternary compound"
Similar Words: four, 4, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe, Quaternary period, Age of Man, fourth, 4th, quaternate

 

Part Meronyms: Cenozoic, Cenozoic era, Age of Mammals

 

 
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