Arqueano
See also:
arqueano
Portuguese
Etymology
From
arqueano
, from
arque
+
-ano
, from
Ancient Greek
ἀρχή
(
arkhḗ
)
.
Proper noun
Arqueano
m
(
geology
)
Archaean
(
geologic eon from about 3,800 to 2,500 million years ago
)