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
Cite this Entry
“Archean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Archean. Accessed 4 Nov. 2025.
Copy CitationKids 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
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