eocene


Pronunciation key

( ēə-sēn )

E•o•cene

adj.

[eo- + Gr. kainos new].

eocene epoch
  1. The earliest epoch of the Tertiary Period which occurred during the Cenozoic Era, when mammals became the dominant group of animals on the planet.
  2. Rocks belonging to the epoch.

References

  • Webster's New World Dictionary of the American Language (College Edition) ©1955
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