Archaean
pronunciation
How to pronounce Archaean in British English:
UK [ɑ:ˈki(:)ən]
How to pronounce Archaean in American English:
US [ɑrˈkiən]
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- Adjective:
- used of the earliest known rocks
Word Origin
- Archaean (adj.)
- "of the earliest geological age," 1872, from Greek arkhaios "ancient," from arkhe "beginning" (see archon).
Example
- 1. An archaean converts dna into proteins very differently from , say , streptococcus-in fact , protein synthesis in archaea is more similar to the human process than to bacteria .
- 2. He says by examining oxidation rates they have shown the mantle has cooled several hundred degrees since the archaean .
- 3. A study published this month in environmental microbiology describes a " giant " archaean that grows to 3 centimeters long and is nearly visible without magnification ( it 's just 0.1 mm thick ) .
- 4. The complete historical processes of the crust growth from the archaean to the cenozoic eras are recorded and remained in south china continent .
- 5. The high-grade metamorphic area is the xiaotazhigou formation in the bottom of the distribution area of archaean .