archaebacteria
[ ahr-kee-bak-teer-ee-uh ]
/ ˌɑr ki bækˈtɪər i ə /
plural noun, singular ar·chae·bac·te·ri·um [ahr-kee-bak-teer-ee-uh m] /ˌɑr ki bækˈtɪər i əm/.
a group of microorganisms, including the methanogens and certain halophiles and thermoacidophiles, that have RNA sequences, coenzymes, and a cell wall composition that are different from all other organisms: considered to be an ancient form of life that evolved separately from the bacteria and blue-green algae and sometimes classified as a kingdom.
Also
ar·chae·o·bac·te·ri·a
[ahr-kee-oh-bak-teer-ee-uh] /ˌɑr ki oʊ bækˈtɪər i ə/.
Words nearby archaebacteria
arch-,
arch.,
arch. e.,
archaea,
archaean,
archaebacteria,
archaebacterium,
archaeo-,
archaeoastronomy,
archaeobotany,
archaeocyathid
British Dictionary definitions for archaebacteria
archaebacteria
/ (ˌɑːkɪbækˈtɪərɪə) /
pl n
(formerly) a group of microorganisms now regarded as members of the Archaea
See archaean
Word Origin for archaebacteria
from
archaeo- +
bacteria
Scientific definitions for archaebacteria
archaebacterium
[ är′kē-băk-tîr′ē-əm ]
Plural archaebacteria
A former name for archaeon.