Dictionary

archaea

archaea

noun plural ar·chaea \är-ˈkē-ə\

Definition of ARCHAEA

:  microorganisms of a domain (Archaea) including especially methane-producing forms, some red halophilic forms, and others of harsh hot acidic environments (as a hot spring) — compare bacterium, eukaryote
ar·chae·al \-əl\ adjective
ar·chae·an \-ən\ adjective or noun

Origin of ARCHAEA

New Latin, from Greek archaios
First Known Use: 1990

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