Look up: nucleus

1. 
   Nucleus
   The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.
   Found on http://home.nas.net/~dbc/cic_hamilton/di
   
   
2. 
   nucleus
   Membrane-bound organelle which contains the DNA in the form of chromosomes. It is the site of DNA replication, and the site of RNA synthesis.
   Found on http://www.ucmp.berkeley.edu/glossary/gl
   
   
3. 
   Nucleus
   The core of the atom, where most of its mass and all of its positive charge is concentrated. Except for hydrogen, it consists of proton and neutrons.
   Found on http://ie.lbl.gov/education/glossary/glo
   
   
4. 
   Nucleus
   The central body of a comet.
   Found on http://www2.jpl.nasa.gov/basics/bsfgloss
   
   
5. 
   Nucleus
   The nucleus is the positively charged central part of an atom.
   Found on http://www.encyclo.co.uk/nol.php
   
   
6. 
   Nucleus
   The positively charged core of an atom, consisting of protons and neutrons (except for hydrogen), around which electrons orbit.
   Found on http://hesperia.gsfc.nasa.gov/sftheory/g
   
   
7. 
   Nucleus
   The membrane-bound region of a eukaryotic cell that contains the chromosomes.
   Found on http://filebox.vt.edu/cals/cses/chagedor
   
   
8. 
   Nucleus
   A collection of neutrons and protons that forms the core of an atom (plural: nuclei).
   Found on http://hepwww.ph.qmw.ac.uk/epp/glossary.
   
   
9. 
   nucleus
   membrane-enclosed protoplasmic body structure within eucaryotic cells containing the genetic material (dna) organised in chromosomes.
   Found on http://www.pestmanagement.co.uk/lib/glos
   
   
10. 
    nucleus
    (Life processes and cells) the center of a cell where genetic information is usually stored.
    Found on http://www.bbc.co.uk/schools/gcsebitesiz
    
    
11. 
    Nucleus
    a cell organelle which contains the chromosomes whose genes control the structure of proteins within the cell. The nucleus is also a term used to refer to the mass of nerve cell bodies connected by tracts of nerve fibres, which occur in the brain.
    Found on http://www.eclipse.co.uk/moordent/glossa
    
    
12. 
    Nucleus
    The nucleus contains positively charged Protons and neutral Neutrons which are bound by nuclear forces. The nucleus makes up the central portion of an Atom and is surrounded by orbiting Electrons . (This description is much simplified but serves its purposes for most practical Radiation Protection purposes).
    Found on http://www.ionactive.co.uk/glossary_atoz
    
    
13. 
    nucleus
    [n] - (astronomy) the center of the head of a comet 2. [n] - the positively charged dense center of an atom 3. [n] - any histologically identifiable mass of neural cell bodies in the brain or spinal cord 4. [n] - a part of the cell containing DNA and RNA and responsible for growth and reproduction
    Found on http://www.webdictionary.co.uk/definitio
    
    
14. 
    Nucleus
    This is physically and functionally the central component of the cell. It is a near-spherical structure, containing the nucleoplasm, the nucleoli, and the chromosomes, and is bounded by the nuclear membrane. Most cells have a single nucleus, although muscle cells have several and red blood cells hav
    Found on http://www.smithsrisca.demon.co.uk/memor
    
    
15. 
    Nucleus
    The central part of an atom containing two particles; a proton and (with the exception of hydrogen) and a neutron.
    Found on http://www.delscope.demon.co.uk/astronom
    
    
16. 
    Nucleus
    The positively charged core of an atom which occupies little of the volume but contains most of the mass.
    Found on http://www.shponline.co.uk/glossary.asp?
    
    
17. 
    Nucleus
    The central part of an atom that contains the protons and neutrons. Plural nuclei. The nuclei of atoms are positively charged and contain by far most of their mass, all but about 0.05% or less. See also: Atom, Neutron, Proton.
    Found on http://www.diracdelta.co.uk/science/sour
    
    
18. 
    nucleus
    (Learning Modules / Biology / DNA / Glossary) The 'heart' of a cell, containing DNA, but also RNA and protein.
    Found on http://www.makingthemodernworld.org.uk/l
    
    
19. 
    Nucleus
    The very small, very dense, positively charged center of an atom containing protons and neutrons, as well as other subatomic particles.
    Found on http://www.allchemicals.info/index/actio
    
    
20. 
    Nucleus
    The central part of an atom containing protons and neutrons.
    Found on http://www.chemicalglossary.net/definiti
    
    
21. 
    nucleus
    The central part of an atom that contains the protons and neutrons. Plural nuclei.
    Found on http://www.shodor.org/UNChem/glossary.ht
    
    
22. 
    Nucleus
    The positively charged core of an atom, an object of -0.00001 atomic diameters containing >99.9% of the atomic mass. Nuclear positions define atomic positions.
    Found on http://www.nano.org.uk/nano/glossary.htm
    
    
23. 
    Nucleus
    A structure in the eukaryote cell bounded by a membrane, that contains the genetic material, in the form of DNA organized into chromosomes
    Found on http://www.i-sis.org.uk/Glossary.php
    
    
24. 
    nucleus
    pertaining to an atom: The centre of an atom. The nucleus is where neutrons* and protons* are tightly bound. Nuclei are many thousands of times smaller than the atom itself. For example, if an atom was the size of a football stadium, the nucleus would be comparable to a pea. pertaining to a comet: The solid part of a comet.
    Found on http://www.gcse.com/glos.htm
    
    
25. 
    Nucleus
    The nucleus is the control centre of the cell. Inside the nucleus are the chromosomes, made of our genes. The genes are made of DNA. The DNA is a code for making body proteins, the building blocks of the human body.
    Found on http://www.cancerhelp.org.uk/glossary.as