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archaebacteria

American  
[ahr-kee-bak-teer-ee-uh] / ˌɑr ki bækˈtɪər i ə /
Also archaeobacteria

plural noun

Microbiology.
archaebacterium singular
  1. a former term for the archaea, which in the three-domain system are no longer classified, either in kingdom or domain, with the bacteria.


archaebacteria British  
/ ˌɑːkɪbækˈtɪərɪə /

plural noun

  1. (formerly) a group of microorganisms now regarded as members of the Archaea See archaean

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of archaebacteria

First recorded in 1975–80; from New Latin; Archae- is irregular for archaeo- (perhaps an erroneous Latinizing of Greek arche- ); see origin at arche-, archaeo-, bacteria

Vocabulary lists containing archaebacteria

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The discovery of the archaebacteria provides the perspective needed to approach the question of whether the universal ancestor was a prokaryote or a progenote.

From Scientific American Jan. 1, 2013

The supposed great antiquity of the archaebacteria remains an unproved prejudice, but it is a plausible one.

From Scientific American Jan. 1, 2013

Although a few biolo­gists still dispute our interpretation, the idea that archaebacteria represent a sep­arate grouping at the highest level is be­ coming generally accepted.

From Scientific American Jan. 1, 2013

The basic molecular biology of archaebacteria is not under­ stood.

From Scientific American Jan. 1, 2013

If one compares both ribosomal RNA and transfer RNA in eukaryotes, eubac­teria and archaebacteria, one finds a general pattern, of which the replace­ment of thymine in archaebacterial transfer RNA's is only one example.

From Scientific American Jan. 1, 2013

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