archean 1

adjectivedomain: all adj

Princeton WordNet [ver.3.1]

English

Definition

of or relating to the earliest known rocks formed during the Precambrian Eon

Synonyms

archaean 1
of or relating to the earliest known rocks formed during the Precambrian Eon

Derivationally related form

noun

the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life

Member_of_this_domain_-_TOPIC

noun

a science that deals with the history of the earth as recorded in rocks

Similar_to

adjective

at or near the beginning of a period of time or course of events or before the usual or expected time