Definitions for archean
ɑrˈki ənarchean

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Archean, Archean eon, Archean aeon, Archeozoic, Archaeozoic, Archeozoic eon, Archaeozoic aeonadjective

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

2. archean, archaeanadjective

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

WikipediaRate this definition:0.0 / 0 votes

1. Archean

   The Archean Eon ( ar-KEE-ən, also spelled Archaean or Archæan) is the second of four geologic eons of Earth's history and by definition representing the time from 4 to 2.5 billion years ago. The Archean was preceded by the Hadean Eon and followed by the Proterozoic. The Earth during the Archean was mostly a water world: there was continental crust, but much of it was under an ocean deeper than today's ocean. Except for some trace minerals, today's oldest continental crust dates back to the Archean. Much of the geological detail of the Archean has been destroyed by subsequent activity. The earliest known life started in the Archean. Life was simple throughout the Archean, mostly represented by shallow-water microbial mats called stromatolites, and the atmosphere lacked free oxygen.

ChatGPTRate this definition:0.0 / 0 votes

1. archean

   The Archean, also spelled Archaean, is a geological eon that occurred between around 4.0 to 2.5 billion years ago, following the Hadean eon and preceding the Proterozoic eon. It is characterized by the formation of the Earth's crust and early continental plates, the development of early life forms, and the emergence of the first stable oceans.

WikidataRate this definition:0.0 / 0 votes

1. Archean

   The Archean, also spelled Archeozoic or Archæozoic is a geologic eon before the Proterozoic Eon, before 2.5 Ga, or 2,500 million years ago.

Usage in printed sourcesFrom: 

1. [["1838","3"],["1839","2"],["1886","6"],["1887","5"],["1890","2"],["1892","5"],["1893","2"],["1894","3"],["1895","2"],["1896","81"],["1897","1"],["1898","12"],["1900","9"],["1901","7"],["1902","7"],["1903","9"],["1904","13"],["1905","5"],["1906","5"],["1907","25"],["1908","3"],["1909","5"],["1910","8"],["1911","9"],["1912","15"],["1913","24"],["1914","1"],["1915","9"],["1916","4"],["1918","1"],["1919","8"],["1920","15"],["1921","7"],["1922","2"],["1923","14"],["1924","2"],["1925","22"],["1926","37"],["1927","5"],["1928","5"],["1929","10"],["1930","28"],["1931","29"],["1932","3"],["1933","1"],["1934","6"],["1935","3"],["1936","8"],["1937","3"],["1938","3"],["1939","1"],["1940","5"],["1941","10"],["1942","10"],["1943","4"],["1944","4"],["1945","48"],["1946","2"],["1947","4"],["1948","4"],["1949","9"],["1950","30"],["1951","15"],["1952","2"],["1953","7"],["1954","2"],["1956","17"],["1957","7"],["1958","10"],["1959","2"],["1960","20"],["1961","10"],["1962","7"],["1963","13"],["1964","10"],["1965","8"],["1966","16"],["1967","27"],["1968","12"],["1969","5"],["1970","7"],["1971","7"],["1972","7"],["1973","5"],["1974","7"],["1975","14"],["1976","8"],["1977","11"],["1978","15"],["1979","18"],["1980","25"],["1981","12"],["1982","15"],["1983","23"],["1984","8"],["1985","15"],["1986","9"],["1987","13"],["1988","11"],["1989","28"],["1990","7"],["1991","14"],["1992","15"],["1993","19"],["1994","13"],["1995","18"],["1996","20"],["1997","12"],["1998","25"],["1999","21"],["2000","28"],["2001","22"],["2002","23"],["2003","33"],["2004","43"],["2005","24"],["2006","36"],["2007","45"],["2008","45"]]

Anagrams for archean »

1. arachne

How to pronounce archean?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say archean in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of archean in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of archean in Pythagorean Numerology is: 5

Examples of archean in a Sentence

1. Hilairy Hartnett:

   The theory of the purple planet is really intriguing, and it's intriguing because it's important for us to think about the fact that we might not be looking for life that looks like life on the modern Earth, we might be looking for life that looks like Earth in the Archean (era of early life), or we might be looking for life that looks like Earth life that lives way at the bottom of the ocean. And we have to think about what that's going to look like. If it uses retinal pigments, it'll be purple.

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=archean
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Archean
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=archean
5. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=archean