Overview of noun archean

The noun archean has 1 sense

• Archean, Archean eon, Archean aeon, Archeozoic, Archaeozoic, Archeozoic eon, Archaeozoic aeon -- (the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life)

Overview of adj archean

The adj archean has 1 sense

• archean, archaean -- (of or relating to the earliest known rocks formed during the Precambrian Eon)