from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Variant of Archean.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. of, or relating to the geologic eon from about 3,800 to 2,500 million years ago; comprises the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras; marked by an atmosphere with little oxygen, the formation of the first continents and oceans and the emergence of simple life
- proper n. the Archaean eon.
Sorry, no etymologies found.