Archeozoic

or Ar·chae·o·zo·ic

[ahr-kee-uh-zoh-ik]Geology

adjective

noting or pertaining to the earlier half of the Precambrian Era, from about 5 billion to 2.5 billion years ago, during which the earliest datable rocks were formed and from which the oldest known fossil forms, blue-green algae and bacteria, have been recovered.

noun

the Archeozoic division of geologic time or the rock systems formed then.

Origin of Archeozoic

1870–75; archeo- + Greek zō(ḗ) life + -ic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for archeozoic

Historical Examples of archeozoic

But how may we separate the Proterozoic rocks from the Archeozoic?
Geology
William J. Miller
During the Archeozoic, no evidence of glaciation has yet been discovered.
Climatic Changes
Ellsworth Huntington
Archeozoic , the era in which the simplest forms of life originated.
Unexplored!
Allen Chaffee
Even in the Archeozoic the rocks testify to a climate seemingly not greatly different from that of the average of geologic time.
Climatic Changes
Ellsworth Huntington
Archeozoic rocks have been studied minutely over a very small percentage of the earth's land surface.
Climatic Changes
Ellsworth Huntington

British Dictionary definitions for archeozoic

Archeozoic

adjective

a variant spelling (esp US) of Archaeozoic

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

archeozoic in Science

Archeozoic

See Archean.