Archean

adjective

Ar·​che·​an är-ˈkē-ən How to pronounce Archean (audio)
variants or Archaean
1
: of, relating to, or being the earliest eon of geologic history or the corresponding system of rocks see Geologic Time Table
2
Archean noun

Word History

Etymology

Greek archaios

First Known Use

1872, in the meaning defined at sense 1

Time Traveler
The first known use of Archean was in 1872

Dictionary Entries Near Archean

Cite this Entry

“Archean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Archean. Accessed 5 Nov. 2024.

Kids Definition

Archean

adjective
Ar·​che·​an
variants or Archaean
: of, relating to, or being the earliest eon of geological history or the corresponding system of rocks see geologic time
Archean noun
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!