Oligocene
oli·go·cene
noun
1.
from 40 million to 25 million years ago; appearance of sabertoothed cats
Origin
From German Oligozän (originally spelt Oligocän, coined in 1854). By surface analysis, oligo- + -cene.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.