a) an organism characterized by the absence of a nuclear membrane and by DNA that is not organized into chromosomes.
b) in the of biological taxonomy, an organism of the kingdom (now superseded).
Syn: prokaryota
See Also: prokaryotic

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  • prokaryote — 1925, from Fr. procaryote, from Gk. pro (see PRO (Cf. pro )) + karyon “nut, kernel.” …   Etymology dictionary

  • prokaryote — [prō kar′ē ōt΄] n. [< Gr pro , before + karyōtis: see EUKARYOTE] an organism lacking a true nucleus: in some systems of biological classification, any of a superkingdom (Prokaryotae) of organisms, including the viruses and monerans: cf.… …   English World dictionary

  • Prokaryote — The prokaryotes (pronEng|proʊˈkærioʊts; singular prokaryote IPA|/proʊˈkæriət/) are a group of organisms that lack a cell nucleus (= karyon), or any other membrane bound organelles. They differ from the eukaryotes, which have a cell nucleus. Most… …   Wikipedia

  • prokaryote — also procaryote noun Etymology: New Latin Prokaryotes, proposed subdivision of protists, from 1pro + kary + otes, plural noun suffix, from Greek ōtos more at otic Date: 1963 any of the typically unicellular microorganisms that lack a distinct… …   New Collegiate Dictionary

  • prokaryote — prokaryotic /proh kar ee ot ik/, adj. /proh kar ee oht , ee euht/, n. any cellular organism that has no nuclear membrane, no organelles in the cytoplasm except ribosomes, and has its genetic material in the form of single continuous strands… …   Universalium

  • Prokaryote — Cell lacking a discrete nucleus and other special subcellular compartments. Bacteria and viruses are prokaryotes. Humans are not prokaryotes, but rather eukaryotes. * * * A member of the superkingdom Prokaryotae; an organismic unit consisting of… …   Medical dictionary

  • prokaryote —    A unicellular organism lacking a membranebound nucleus, for example, bacteria. Prokaryotes do not undergo mitosis …   Forensic science glossary

  • prokaryote — n. unicellular organism that does not have a nuclear membrane or cell organelles (such as bacteria and blue green algae) …   English contemporary dictionary

  • prokaryote — [prəʊ karɪəʊt, ɒt] (also procaryote) noun Biology a single celled organism with neither a distinct nucleus with a membrane nor other specialized structures (i.e. a bacterium or archaean). Compare with eukaryote. Derivatives prokaryotic adjective… …   English new terms dictionary

  • prokaryote — pro·kary·ote …   English syllables

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