| 释义 |
Archaea, n. Biol.
Brit. |ɑːˈkiːə|, U.S. |ɑrˈkiə|, |ɑrˈkeɪə|
[‹ scientific Latin Archaea (see quot. 1990). Compare archaeon n.]
A taxon comprising the archaebacteria; (also archaea) organisms of this taxon (collectively or individually), archaebacteria. Cf. archaeon n.
The term Archaea was proposed in the context of a classification which emphasized the distinction between archaebacteria and ‘true’ bacteria. Some classifications have subsequently treated Archaea as a subdivision of Bacteria.
1990C. R. Woese et al. in Proc. National Acad. Sci. U.S.A. 87 4576 We propose that a formal system of organisms be established in which above the level of kingdom there exists a new taxon called a ‘domain’. Life on this planet would then be seen as comprising three domains, the Bacteria, the Archaea, and the Eucarya, each containing two or more kingdoms. 1994New Scientist 11 June 19/1 As a kingdom, the archaea are known for the inhospitable habitats they pick to live in—hot springs, deep ocean vents, and salt flats. 1997N.Y. Times 11 Apr. a12/5 These underwater volcanoes, or black smokers, are home to a strange array of creatures found nowhere else, as well as to many species of archaea. 1998L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) i. 44 Bacteria assort into two fundamentally different, and therefore ancient, groups: the Archaebacteria (Archaea) and the Eubacteria. 2008Nature 14 Feb. p. xi/2 The Archaea were once thought of as the more primitive of the two prokaryotic lineages. |