archaebacteria

ar·chae·bac·te·ri·um

 (är′kē-băk-tîr′ē-əm)

n. pl. ar·chae·bac·te·ri·a

See archaeon.

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[archae(o)- + bacterium.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

archaebacteria

(ˌɑːkɪbækˈtɪərɪə)

pl n, sing -rium (-rɪəm)

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

[from archaeo- + bacteria]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ar•chae•bac•te•ri•a

(ˌɑr ki bækˈtɪər i ə)

also ar•chae•o•bac•te•ri•a

(ˌɑr ki oʊ-)

n.pl., sing. -te•ri•um (-ˈtɪər i əm)

a group of microorganisms, including methanogens and halobacteria, that are genetically and functionally different from all other living forms, thrive in oxygen-poor environments, and are sometimes classified as a separate kingdom.

[1977; < New Latin, =archae-, irreg. for archaeo- archaeo- (perhaps an erroneous Latinizing of Greek arche- arche-) + bacteria bacteria]

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Thesaurus

Noun

1.

archaebacteria - considered ancient life forms that evolved separately from bacteria and blue-green algae archaebacterium, archaeobacteria, archeobacteria moneran, moneron - organisms that typically reproduce by asexual budding or fission and whose nutritional mode is absorption or photosynthesis or chemosynthesis division Archaebacteria - in some classifications considered a kingdom methanogen - archaebacteria found in anaerobic environments such as animal intestinal tracts or sediments or sewage and capable of producing methane; a source of natural gas halophil, halophile - archaebacteria requiring a salt-rich environment for growth and survival thermoacidophile - archaebacteria that thrive in strongly acidic environments at high temperatures

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