Definition of Cretaceous in English:

Cretaceous

adjective

Geology
  • 1Relating to or denoting the last period of the Mesozoic era, between the Jurassic and Tertiary periods.

    • ‘As such, they have been found fossilized in Jurassic and Cretaceous deposits, and have been used to reconstruct paleoclimates.’
    • ‘The foothills of the Pyrenees are composed of sedimentary Jurassic and Cretaceous limestones which favour the creation of natural cave systems.’
    • ‘For that matter, extant birds are quite different from Jurassic and Cretaceous birds.’
    • ‘The Jurassic and Cretaceous together were the age of giant reptiles.’
    • ‘These crucial means of breeding prevailed throughout the Jurassic and Cretaceous times.’
    1. 1.1as noun the Cretaceous The Cretaceous period or the system of rocks deposited during it.

Origin

Late 17th century: from Latin cretaceus (from creta ‘chalk’) + -ous.

Pronunciation

Cretaceous

/krɪˈteɪʃəs/