Definitions for Nucleusˈnu kli əs, ˈnyu-; -kliˌaɪ

This page provides all possible meanings and translations of the word Nucleus

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. nucleus, cell nucleus, karyon(noun)

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

  2. nucleus(noun)

    the positively charged dense center of an atom

  3. core, nucleus, core group(noun)

    a small group of indispensable persons or things

    "five periodicals make up the core of their publishing program"

  4. nucleus(noun)

    (astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail

  5. nucleus(noun)

    any histologically identifiable mass of neural cell bodies in the brain or spinal cord

  6. lens nucleus, nucleus(noun)

    the central structure of the lens that is surrounded by the cortex

GCIDERate this definition:(0.00 / 0 votes)

  1. Nucleus(n.)

    (Biol.) A body, usually spheroidal, in a eukaryotic cell, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents, which contains the chromosomal genetic material, including the chromosomal DNA. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division.

  2. Origin: [L., a kernel, dim. fr. nux, nucis, nut. Cf. Newel post.]

WiktionaryRate this definition:(0.00 / 0 votes)

  1. nucleus(Noun)

    The core, central part (of something), round which others are assembled.

  2. nucleus(Noun)

    An initial part or version that will receive additions.

    This collection will form the nucleus of a new library.

  3. nucleus(Noun)

    The massive, positively charged central part of an atom, made up of protons and neutrons.

  4. nucleus(Noun)

    A large organelle found in cells which contains genetic material.

  5. nucleus(Noun)

    A ganglion, cluster of many neuronal bodies where synapsing occurs.

  6. nucleus(Noun)

    The central part of a syllable, most commonly a vowel.

  7. Origin: From nucleus, a diminutive of nux.

Webster DictionaryRate this definition:(0.00 / 0 votes)

  1. Nucleus(noun)

    a kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; -- used both literally and figuratively

  2. Nucleus(noun)

    the body or the head of a comet

  3. Nucleus(noun)

    an incipient ovule of soft cellular tissue

  4. Nucleus(noun)

    a whole seed, as contained within the seed coats

  5. Nucleus(noun)

    a body, usually spheroidal, in a cell or a protozoan, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division

  6. Nucleus(noun)

    the tip, or earliest part, of a univalve or bivalve shell

  7. Nucleus(noun)

    the central part around which additional growths are added, as of an operculum

  8. Nucleus(noun)

    a visceral mass, containing the stomach and other organs, in Tunicata and some mollusks

  9. Origin: [L., a kernel, dim. fr. nux, nucis, nut. Cf. Newel post.]

Editors ContributionRate this definition:(0.00 / 0 votes)

  1. nucleus

    a special kind of central norma, the owner of a systruct enabling normas to operate in its systruct. it has no (business) implementation powers. implementation is licensed to numerous bothros, each with a specific operational mandate to implement dedicated programs according to the focus of the nucleus.


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