from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A single-celled or multicellular organism whose cells contain a distinct membrane-bound nucleus.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of the single-celled or multicellular organisms, of the taxonomic domain Eukaryota, whose cells contain at least one distinct nucleus.
from the GNU version of the Collaborative International Dictionary of English
- n. an organism with "good" or membrane-bound nuclei having multiple chromosomes; eucaryotes also have other membrane-bound organelles such as mitochondria or chloroplasts, within the cytoplasm enclosed by the outer membrane. Such cells are characteristic of all life forms except primitive microorganisms such as bacteria and blue-green algae. Contrasted with
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an organism with cells characteristic of all life forms except primitive microorganisms such as bacteria; i.e. an organism with `good' or membrane-bound nuclei in its cells
eu- + Greek karuōtos, having nuts (from karuon, nut; see kar- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)
eu- + kary- + -ote (Wiktionary)