- Eogene⇄adj. of or having to do with the Eogene division or its rocks.
- Eogene⇄Eogene, noun, adjective.
- Eogene⇄noun 1. a division of the Tertiary period (comprising the Paleocene, Eocene, and Oligocene epochs); Paleogene.
2. the strata formed in this division.