archaean
/ɑɹˈkiːən/
Word Rarity
Very rare
Frequency: Zipf frequency 1.63 in modern English
13
Scrabble Score
8
Letters
2
Syllables
6
Unique Chars
Meaning
adj
Of or relating to Arche, the Muse of beginnings in Greek mythology.
adj
Of, or relating to the geologic eon from about 4,031 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.
name
The eon from 2,500 Ma to 4,000 Ma.
Example Sentences
- "The oldest vestiges of continental crust, which date from the Archaean aeon about 4 billion years ago, are in Acasta in north-west Canada."
Etymology
Origin
Word Breakdown
Regional Pronunciation
- American English: /ɑɹˈkiːən/
- British English: /ɑːˈkiːən/
Inflected Forms
Frequently Paired Words
Hadean
Proterozoic - eons in Precambrian