• WordNet 3.6
    • adj archaean of or relating to the earliest known rocks formed during the Precambrian Eon
    • ***
Chambers's Twentieth Century Dictionary
    • adj Archaean (ärk-ē′an) of or belonging to the earliest zoological period
    • ***


Chambers's Twentieth Century Dictionary
Gr. archaikosarchaios, ancient—archē, beginning.


In literature:

The Archaean rocks still solidly underlie the lowest depth he has ever reached.
"The Story of Evolution" by Joseph McCabe
Mummius, commanding in Greece, defeats the Archaeans at Leucopetra; he captures and destroys Corinth.
"The Great Events by Famous Historians, Vol. 2" by Various
This is the beach of the Lower Silurian sea when it washed the shores of an Archaean island, now the Black Hills.
"Scientific American Supplement, No. 446, July 19, 1884" by Various
The sides of this canon show it to be hollowed out of solid Archaean rock.
"Scientific American Supplement No. 822" by Various
During the vast ages of this archaean the life of our earth began to be.
"Young Folks' Library, Volume XI (of 20)" by Various
Archaean - 750 millions of years.
"The Birth-Time of the World and Other Scientific Essays" by J. (John) Joly
Archaeans and Phrygians bold Have fought with Hatred's biting lust.
"Betelguese" by Jean Louis de Esque
The Western Division is composed entirely of Archaean and Palaeozoic rocks, embracing the whole range from pre-Cambrian up to Carboniferous.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 4" by Various
A vast thickness of stratified rocks was formed, which are called Archaean ("ancient").
"The Geological Story of the Isle of Wight" by J. Cecil Hughes
Sutherland, are examples of Archaean masses in Great Britain.
"The New Gresham Encyclopedia. Vol. 1 Part 2" by Various