Eozoic

[ ee-uh-zoh-ik ]

adjective

, Geology.

1. (formerly) noting or pertaining to the Precambrian Era, especially the period including the beginnings of animal life.

Eozoic

/ ˌiːəʊˈzəʊɪk /

adjective

1. archaic.
   of or formed in the part of the Precambrian era, during which life first appeared

Word History and Origins

Origin of Eozoic¹

First recorded in 1875–80; eo- + zo- + -ic

Example Sentences

The English chalk and the chalky modern mud of the Atlantic sea-bed, are precisely similar in origin to the Eozoic limestones.

From Project Gutenberg

In it the forms of animal and plant life that had been becoming more numerous and varied from the Eozoic onward, culminated.

From Project Gutenberg

In his system the greater divisions of the history were “Times:” thus the Eozoic was a time and the Palozoic was a time.

From Project Gutenberg

Another problem is that of means of subsistence for the Eozoic Foraminifera.

From Project Gutenberg

In the oldest rocks known to geologists—those of the Eozoic time—some indications of the presence of life are found.

From Project Gutenberg