What does nucleus mean?

Definitions for nucleus
ˈnu kli əs, ˈnyu-; -kliˌaɪnu·cle·us

Here are all the possible meanings and translations of the word nucleus.

Princeton's WordNet

  1. nucleus, cell nucleus, karyonnoun

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

  2. nucleusnoun

    the positively charged dense center of an atom

  3. core, nucleus, core groupnoun

    a small group of indispensable persons or things

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

  4. nucleusnoun

    (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. nucleusnoun

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

  6. lens nucleus, nucleusnoun

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

GCIDE

  1. Nucleusnoun

    (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.

Wiktionary

  1. nucleusnoun

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

  2. nucleusnoun

    An initial part or version that will receive additions.

    This collection will form the nucleus of a new library.

  3. nucleusnoun

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

  4. nucleusnoun

    A large organelle found in cells which contains genetic material.

  5. nucleusnoun

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

  6. nucleusnoun

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

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

Samuel Johnson's Dictionary

  1. NUCLEUSnoun

    A kernel; any thing about which matter is gathered or conglobated.

    Etymology: Latin.

    The crusts are each in all parts nearly of the same thickness, their figure suited to the nucleus, and the outer surface of the stone exactly of the same form with that of the nucleus. John Woodward, on Fossils.

Webster Dictionary

  1. Nucleusnoun

    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. Nucleusnoun

    the body or the head of a comet

  3. Nucleusnoun

    an incipient ovule of soft cellular tissue

  4. Nucleusnoun

    a whole seed, as contained within the seed coats

  5. Nucleusnoun

    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. Nucleusnoun

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

  7. Nucleusnoun

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

  8. Nucleusnoun

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

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

Chambers 20th Century Dictionary

  1. Nucleus

    nū′klē-us, n. the central mass round which matter gathers: (astron.) the head of a comet:—pl. Nuclei (nū′klē-ī).adjs. Nū′clēal, Nū′clēar, pertaining to a nucleus.—v.t. Nū′clēāte, to gather into or around a nucleus.—adjs. Nū′clēate, -d, having a nucleus; Nū′clēiform.—ns. Nū′clēin, a colourless amorphous proteid, a constituent of cell-nuclei; Nū′cleobranch, one of an order of molluscs which have the gills packed in the shell along with the heart:—pl. Nucleobranchiă′ta; Nū′clēōle, a little nucleus: a nucleus within a nucleus—also Nuclē′olus:—pl. Nuclē′oli. [L.,—nux, nucis, a nut.]

Editors Contribution

  1. nucleus

    A type of energy.

    The nucleus of the farm was working efficiently therefore it all functioned amazing.


    Submitted by MaryC on January 1, 2020  

Entomology

  1. Nucleus

    a well-defined, differentiated, round or oval body imbedded in the cell contents.

How to pronounce nucleus?

How to say nucleus in sign language?

Numerology

  1. Chaldean Numerology

    The numerical value of nucleus in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of nucleus in Pythagorean Numerology is: 5

Examples of nucleus in a Sentence

  1. Tunisian Defence Minister Farhat Harchani:

    We will participate in the formation of the nucleus of the Libyan army and security forces in Tunisia. This is our duty and we will help Libya to get it done.

  2. Minnesota Twins:

    We have a group of young players here in Minnesota, a nucleus of young guys that were really coming into their own in a lot of ways, i think some of those guys were ready to take the next step in their career offensively, and a couple of those guys were doing that at the same time. We also complemented them with some quality, veteran players.

  3. William James Durant:

    The family is the nucleus of civilization.

  4. Norman Douglas:

    There is in us a lyric germ or nucleus which deserves respect; it bids a man to ponder or create; and in this dim corner of himself he can take refuge and find consolations which the society of his fellow creatures does not provide.

  5. Robert Collier:

    First the stalk -- then the roots. First the need -- then the means to satisfy that need. First the nucleus -- then the elements needed for its growth.

Popularity rank by frequency of use

nucleus#10000#12085#100000

Translations for nucleus

From our Multilingual Translation Dictionary

Get even more translations for nucleus »

Translation

Find a translation for the nucleus definition in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Gaeilge (Irish)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:


Discuss these nucleus definitions with the community:

0 Comments

    Citation

    Use the citation below to add this definition to your bibliography:

    Style:MLAChicagoAPA

    "nucleus." Definitions.net. STANDS4 LLC, 2022. Web. 6 Oct. 2022. <https://www.definitions.net/definition/nucleus>.

    Are we missing a good definition for nucleus? Don't keep it to yourself...

    Browse Definitions.net

    Free, no signup required:

    Add to Chrome

    Get instant definitions for any word that hits you anywhere on the web!

    Free, no signup required:

    Add to Firefox

    Get instant definitions for any word that hits you anywhere on the web!

    Quiz

    Are you a words master?

    »
    a long narrow excavation in the earth
    • A. leaven
    • B. helm
    • C. ditch
    • D. reciprocal

    Nearby & related entries:

    Alternative searches for nucleus: