prokaryote

or pro·car·y·ote

[ proh-kar-ee-oht, -ee-uht ]

/ proʊˈkær iˌoʊt, -i ət /

noun

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 forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae.

Compare eukaryote.

Origin of prokaryote

taken as singular of New Latin Prokaryota, earlier Procaryotes (1925); see pro-¹, eukaryote

OTHER WORDS FROM prokaryote

pro·kar·y·ot·ic

[proh-kar-ee-ot-ik], /proʊˌkær iˈɒt ɪk/, adjective

Words nearby prokaryote

projective test, project note, projector, projet, prokaryon, prokaryote, prokaryotes, Prokhorov, Prokofiev, Prokopyevsk, prolabium

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for prokaryote

prokaryote

procaryote

/ (prəʊˈkærɪɒt) /

noun

any organism having cells in each of which the genetic material is in a single DNA chain, not enclosed in a nucleus. Bacteria and archaeans are prokaryotesCompare eukaryote

Derived forms of prokaryote

prokaryotic or procaryotic (prəʊˌkærɪˈɒtɪk), adjective

Word Origin for prokaryote

from pro- ² + karyo- + -ote as in zygote

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

Medical definitions for prokaryote

prokaryote

n.

An organism of the kingdom Prokaryotae, constituting the bacteria and cyanobacteria, characterized by the absence of a nuclear membrane and by DNA that is not organized into chromosomes.

Other words from prokaryote

pro•kar′y•ot′ic (-ŏt′ĭk) adj.

Scientific definitions for prokaryote

prokaryote

[ prō-kăr′ē-ōt′ ]

Any of a wide variety of one-celled organisms of the kingdom Monera (or Prokaryota) that are the most primitive and ancient known forms of life. Prokaryotes lack a distinct cell nucleus and their DNA is not organized into chromosomes. They also lack the internal structures bound by membranes called organelles, such as mitochondria. At the molecular level, prokaryotes differ from eukaryotes in the structure of their lipids and of certain metabolic enzymes, and in how genes are expressed for protein synthesis. Prokaryotes reproduce asexually and include the bacteria and blue-green algae. Also called moneran Compare eukaryote. See Table at taxonomy.

单词	prokaryote
释义	prokaryote or pro·car·y·ote [ proh-kar-ee-oht, -ee-uht ] / proʊˈkær iˌoʊt, -i ət / noun 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 forming coils or loops, characteristic of all organisms in the kingdom Monera, as the bacteria and blue-green algae. Compare eukaryote. Origin of prokaryote taken as singular of New Latin Prokaryota, earlier Procaryotes (1925); see pro-¹, eukaryote OTHER WORDS FROM prokaryote pro·kar·y·ot·ic [proh-kar-ee-ot-ik], /proʊˌkær iˈɒt ɪk/, adjective Words nearby prokaryote projective test, project note, projector, projet, prokaryon, prokaryote, prokaryotes, Prokhorov, Prokofiev, Prokopyevsk, prolabium Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for prokaryote prokaryote procaryote / (prəʊˈkærɪɒt) / noun any organism having cells in each of which the genetic material is in a single DNA chain, not enclosed in a nucleus. Bacteria and archaeans are prokaryotesCompare eukaryote Derived forms of prokaryote prokaryotic or procaryotic (prəʊˌkærɪˈɒtɪk), adjective Word Origin for prokaryote from pro- ² + karyo- + -ote as in zygote Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for prokaryote prokaryote n. An organism of the kingdom Prokaryotae, constituting the bacteria and cyanobacteria, characterized by the absence of a nuclear membrane and by DNA that is not organized into chromosomes. Other words from prokaryote pro•kar′y•ot′ic (-ŏt′ĭk) adj. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for prokaryote prokaryote [ prō-kăr′ē-ōt′ ] Any of a wide variety of one-celled organisms of the kingdom Monera (or Prokaryota) that are the most primitive and ancient known forms of life. Prokaryotes lack a distinct cell nucleus and their DNA is not organized into chromosomes. They also lack the internal structures bound by membranes called organelles, such as mitochondria. At the molecular level, prokaryotes differ from eukaryotes in the structure of their lipids and of certain metabolic enzymes, and in how genes are expressed for protein synthesis. Prokaryotes reproduce asexually and include the bacteria and blue-green algae. Also called moneran Compare eukaryote. See Table at taxonomy. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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