from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An organism of the kingdom Monera (or Prokaryotae), comprising the bacteria and cyanobacteria, characterized by the absence of a distinct, membrane-bound nucleus or membrane-bound organelles, and by DNA that is not organized into chromosomes. Also called moneran.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An organism whose cell (or cells) are characterized by the absence of a nucleus or any other membrane-bound organelles.
  • n. In the two-empire system of biological taxonomy, an organism of the kingdom Prokaryotae (now superseded).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a unicellular organism having cells lacking membrane-bound nuclei; bacteria are the prime example but also included are blue-green algae and actinomycetes and mycoplasma


French procaryote : Greek pro-, before; see pro-2 + Greek karuōtos, having nuts (from karuon, nut; see karyo-).
(American Heritage® Dictionary of the English Language, Fourth Edition)
From pro- + Ancient Greek κάρυον (karuon, "nut, kernel") + -ote. (Wiktionary)



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