from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The nucleus of a cell

from The Century Dictionary and Cyclopedia

  • n. The cell-nucleus.

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

  • n. a part of the cell containing DNA and RNA and responsible for growth and reproduction


From the Ancient Greek κάρυον ("nut, kernel"). (Wiktionary)


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