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ar•chae•bac•te•ri•a



Pronunciation: (är"kē-bak-tēr'ē-u), [key]
n.pl.,
sing. -te•ri•umPronunciation: (-tēr'ē-um). [key]

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•aPronunciation: (är"kē-ō-bak-tēr'ē-u). [key]

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Archaeanarchaeo-
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