follow Dictionary.com

Yours, Etc.: Origins and Uses of 8 Sign-Offs

eukaryote

[yoo-kar-ee-oht, -ee-uh t] /yuˈkær iˌoʊt, -i ət/
noun, Biology
1.
any organism having as its fundamental structural unit a cell type that contains specialized organelles in the cytoplasm, a membrane-bound nucleus enclosing genetic material organized into chromosomes, and an elaborate system of division by mitosis or meiosis, characteristic of all life forms except bacteria, blue-green algae, and other primitive microorganisms.
Also, eucaryote.
Compare prokaryote.
Origin
< Neo-Latin Eukaryota, earlier Eucaryotes (1925) “those having a true nucleus,” equivalent to eu- eu- + Greek káry(on) nut, kernel (see karyo-) + Neo-Latin -ota, -otes; see -ote
Related forms
eukaryotic
[yoo-kar-ee-ot-ik] /yuˌkær iˈɒt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for eukaryotes
  • But there are some important caveats: it counts only the eukaryotes, that is, critters with relatively complex cells.
  • Ancestors that split from archaea evolved into eukaryotes-life-forms, including humans, whose cells have nuclei.
  • Biological cells come in two main types: prokaryotes and eukaryotes.
  • We all know that eukaryotes are bigger than prokaryotes.
  • The researchers decided to concentrate on yeast as it is one of the best studied eukaryotes on the planet.
  • They are formed by a symbiotic relationship between a single-celled fungus and a single-celled algae, both eukaryotes.
  • In eukaryotes, they are located in the nucleus and the cytoplasm.
  • Larger eukaryotes, such as mammals, have motile cilia as well.
British Dictionary definitions for eukaryotes

eukaryote

/juːˈkærɪˌɒt/
noun
1.
any member of the Eukarya, a domain of organisms having cells each with a distinct nucleus within which the genetic material is contained. Eukaryotes include protoctists, fungi, plants, and animals Compare prokaryote
Derived Forms
eukaryotic, eucaryotic (ˌjuːkærɪˈɒtɪk) adjective
Word Origin
from eu- + 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
Cite This Source
eukaryotes in Medicine

eukaryote eu·kar·y·ote or eu·car·y·ote (yōō-kār'ē-ōt, -ē-ət)
n.
A single-celled or multicellular organism whose cells contain a distinct membrane-bound nucleus.


eu·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.
Cite This Source
eukaryotes in Science
eukaryote
  (y-kār'ē-ōt)   
An organism whose cells contain a nucleus surrounded by a membrane and whose DNA is bound together by proteins (histones) into chromosomes. The cells of eukaryotes also contain an endoplasmic reticulum and numerous specialized organelles not present in prokaryotes, especially mitochondria, Golgi bodies, and lysosomes. The organelles are enclosed in a three-part membrane (called a unit membrane) consisting of a lipid layer sandwiched between two protein layers. All organisms except for bacteria and archaea are eukaryotes. Compare prokaryote.

eukaryotic adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
eukaryotes in Culture
eukaryote [(yooh-kar-ee-oht)]

An organism whose cells contain a nucleus. All multicelled organisms are eukaryotes, as is one superkingdom of single-celled organisms. Eukaryotes also have organelles enclosed by membranes. (Compare prokaryote.)

Note: Eukaryotes evolved in a process in which one early prokaryote consumed another, forming a more complex structure.
Note: The word eukaryote comes from the Greek for “true nucleus.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for eukaryote

Few English speakers likely know this word

Word Value for eukaryotes

17
0
Scrabble Words With Friends

Nearby words for eukaryotes