Cenozoic
ce·no·zoic
noun
1.
approximately the last 63 million years
Origin
From ceno- + -zoic; from Ancient Greek καινός (kainós, “new”) + ζωή (zōḗ, “life”).
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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.