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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 Ol·i·go·cene /ˈɑlɪgoˌsin, ˈo; əˈlɪgə-/
 漸新世,漸新統(a.)漸新世的,漸新統的

From: Webster's Revised Unabridged Dictionary (1913)

 Ol·i·go·cene a.  Geol. Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods. -- n. The Oligocene period. See the Chart of Geology.
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From: WordNet (r) 2.0

 Oligocene
      n : from 40 million to 25 million years ago; appearance of
          sabertoothed cats [syn: Oligocene epoch]