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quaternary

/kwot-er-ner-ee, kwuh-tur-nuh-ree/US // ˈkwɒt ərˌnɛr i, kwəˈtɜr nə ri //UK // (kwəˈtɜːnərɪ) //

第四级,第四纪,第四阶段,第四纪的

Related Words

Definitions

adj.形容词 adjective
  1. 1
    • : consisting of four.
    • : arranged in fours.
    • : Geology. noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era, originating about 2 million years ago and including the Recent and Pleistocene Epochs.
    • : Metallurgy. having four principal constituents.
n.名词 noun
  1. 1

    plural quat·er·nar·ies.

    • : a group of four.
    • : the number four.
    • : Geology. the Quaternary Period or System.

Synonyms & Antonyms

Examples

  • El Centro Regional is not a tertiary or quaternary care center, meaning it’s not a hospital with extensive specialty service or care.

  • And the bones of man himself appear, extending through what is known as the Quaternary or Pleistocene period.

  • Subspeciation has been enhanced by the late Quaternary mountain building which was prevalent over the western United States.

  • A distinct species characterised the Quaternary deposits of South America.

  • The Tertiary and Quaternary formations are partly of marine and partly of terrestrial and fresh-water origin.

  • The Post-tertiary or Quaternary division comprises the concluding chapters of geological history.