Definition of Cambrian in English:


Line breaks: Cam|brian
Pronunciation: /ˈkambrɪən


  • 1(Chiefly in names or geographical terms) Welsh: the Cambrian Railway
    More example sentences
    • The Cambrian mountains, almost overwhelmed by conifer plantations, are growing a new kind of forest.
    • The Cambrian Railways were absorbed by the Great Western Railway on 1 January 1922.
    • In 1865 The Cambrian Railway company was formed through an amalgamation of smaller companies.
  • 2 Geology Relating to or denoting the first period in the Palaeozoic era, between the end of the Precambrian aeon and the beginning of the Ordovician period.
    More example sentences
    • Precambrian rocks are those formed before the beginning of the Cambrian period, about 590 million years ago.
    • Others have suggested that there is nothing unusual about Cambrian faunas in terms of their flexibility or disparity.
    • Sedgwick began fieldwork at Barmouth in north Wales in 1831 where he established the order of local rocks and gave the name Cambrian to the oldest fossiliferous strata.
  • 2.1 (as noun the Cambrian) The Cambrian period or the system of rocks deposited during it.
  • The Cambrian lasted from about 570 to 510 million years ago and was a time of widespread seas. It is the earliest period in which fossils, notably trilobites, can be used in geological dating


mid 17th century: from Latin Cambria 'Wales', variant of Cumbria, from Welsh Cymry 'Welshman' or Cymru 'Wales'.

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