Definition of Oligocene in English:

Oligocene

Line breaks: Oligo|cene
Pronunciation: /ˈɒlɪgə(ʊ)siːn
 
/

adjective

Geology
  • 1Relating to or denoting the third epoch of the Tertiary period, between the Eocene and Miocene epochs.
    More example sentences
    • It includes the Palaeocene, Eocene, and Oligocene epochs, spanning the time from the end of the Mesozoic to the beginning of the Neogene, i.e. from 65 Ma to 23 Ma.
    • In profiles though the summit, Qum Kuh can be considered as a pile of recumbent fold nappes of gneissose and mylonitic Oligocene and Miocene salts that have extruded from depth and gravity spread over recent gravels.
    • Profiles through the summit of a small nearly axisymmetric extrusion of Oligocene and Miocene salt, and simple analogue models of it, simulate the profiles of piles of ductile nappes extruded from convergent orogens.
  • 1.1 (as noun the Oligocene) The Oligocene epoch or the system of rocks deposited during it.

The Oligocene epoch lasted from 35.4 to 23.3 million years ago. It was a time of falling temperatures, with evidence of the first primates

Origin

mid 19th century: from oligo- 'few' + Greek kainos 'new'.

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Pronunciation: mɪˈlɔːd
noun
used to address an English nobleman