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Adjective: Neogene  'nee-u,jeen
  1. (geology) of a geologic period within the Cenozoic era; comprises the Miocene, Pliocene, Pleistocene and Holocene epochs from about 26 million years ago to the present
Noun: Neogene  'nee-u,jeen
  1. (geology) the Neogene period

Encyclopedia: Neogene