aeon : Idioms & Phrases
Index
archaeozoic aeon
-
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
Archeozoic eon; Archean eon; Archaeozoic aeon; Archaeozoic; Archean; Archeozoic.
WordNet
archean aeon
-
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
Archeozoic eon; Archean eon; Archaeozoic aeon; Archaeozoic; Archean; Archeozoic.
WordNet
hadean aeon
-
noun the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life
Priscoan; Hadean aeon; Hadean; Hadean time; Hadean eon; Priscoan eon.
WordNet
phanerozoic aeon
-
noun the period from about 5,400 million years ago until the present
Phanerozoic; Phanerozoic eon.
WordNet
precambrian aeon
-
noun the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
Precambrian eon; Precambrian period; Precambrian.
WordNet
priscoan aeon
-
noun the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life
Priscoan; Hadean aeon; Hadean; Hadean time; Hadean eon; Priscoan eon.
WordNet
proterozoic aeon
-
noun from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
Proterozoic eon; Proterozoic.
