[ ahr-kee-bak-teer-ee-uh ]
/ 藢蓱r ki b忙k藞t瑟蓹r i 蓹 /
Save This Word!

plural noun, singular ar路chae路bac路te路ri路um [ahr-kee-bak-teer-ee-uhm]. /藢蓱r ki b忙k藞t瑟蓹r i 蓹m/. Microbiology.
a former term for the archaea, which in the three-domain system are no longer classified, either in kingdom or domain, with the bacteria.
In effect, this quiz will prove whether or not you have the skills to know the difference between 鈥渁ffect鈥 and 鈥渆ffect.鈥
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help
Also ar路chae路o路bac路te路ri路a [ahr-kee-oh-bak-teer-ee-uh]. /藢蓱r ki o蕣 b忙k藞t瑟蓹r i 蓹/.
See also domain (def. 6).

Origin of archaebacteria

First recorded in 1975鈥80; from New Latin; Archae- is irregular for archaeo- (perhaps an erroneous Latinizing of Greek arche- ); see origin at arche-,archaeo-, bacteria
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2022

British Dictionary definitions for archaebacteria

/ (藢蓱藧k瑟b忙k藞t瑟蓹r瑟蓹) /

pl n
(formerly) a group of microorganisms now regarded as members of the ArchaeaSee archaean

Word Origin for archaebacteria

from archaeo- + bacteria
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012