| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| eocene | adjective | Pertaining to the first in time of the three subdivisions into which the Tertiary formation is divided by geologists, and alluding to the approximation in its life to that of the present era; as, Eocene deposits., The Eocene formation. |
| eolian | adjective | Aeolian., Formed, or deposited, by the action of wind, as dunes. |
| eozoic | adjective | Of or pertaining to rocks or strata older than the Paleozoic, in many of which the eozoon has been found. |
| eozoon | noun | A peculiar structure found in the Archaean limestones of Canada and other regions. By some geologists it is believed to be a species of gigantic Foraminifera, but others consider it a concretion, without organic structure. |