Definition of quaternary

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  • quaternary is a valid Scrabble US word with a point value of 22
  • quaternary is a valid Scrabble UK word with a point value of 22
  • quaternary is a valid Words with friends word with a point value of 23

Definition of quaternary

  • last 2 million years (noun)

    Synonyms

    1. age of man
    2. quaternary period
  • coming next after the third and just before the fifth in position or time or degree or magnitude (adjective)

    Examples

    1. the quaternary period of geologic time extends from the end of the tertiary period to the present

    Synonyms

    1. 4th
    2. fourth
  • consisting of or especially arranged in sets of four (adjective)

    Examples

    1. a quaternary compound

    Synonyms

    1. quaternate
  • the cardinal number that is the sum of three and one (noun)

    Synonyms

    1. 4
    2. four
    3. foursome
    4. iv
    5. little joe
    6. quadruplet
    7. quartet
    8. quatern
    9. quaternion
    10. quaternity
    11. tetrad

See definition of quaternary in Merriam Webster