English English Dictionary
English English Dictionary
The online English-English dictionary from The Project Gutenberg
Result
Result for Archaean
Archaean
(a.)
Ancient; pertaining to the earliest period in geological
history.
Archaean
(n.)
The earliest period in geological period, extending up to
the Lower Silurian. It includes an Azoic age, previous to the
appearance of life, and an Eozoic age, including the earliest forms of
life.