| NOUN | time | Archean eon, Archean, Archean aeon, Archeozoic, Archaeozoic, Archeozoic eon, Archaeozoic aeon | the time from 3,800 million years to 2,500 million years ago |
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| Meaning | The time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life. | |
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| Synonyms | Archean, Archean aeon, Archeozoic, Archaeozoic, Archeozoic eon, Archaeozoic aeon | |
| Instance of | eon, aeon | The longest division of geological time |
| Part of | Precambrian, Precambrian eon, Precambrian aeon, Precambrian period | The eon following the Hadean time and preceding the Phanerozoic eon |
| Spanish | arcaico | |
| Catalan | arqueà | |
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