Look up: Deuterium

1. Deuterium
   An isotope of hydrogen whose atoms are twice as massive as ordinary hydrogen;deuterion atoms contain both a proton and a neutron in the nucleus.
   Found on http://home.nas.net/~dbc/cic_hamilton/di
   
   
2. deuterium
   [n] - an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. Deuterium
   An isotope of hydrogen that contains one neutron and one proton in its nucleus. In normal water a deuterium atom occurs in 1 in 6,500 hydrogen atoms. DiscoveredHarold C. Urey, F. G. Brickwedde, and G. M. Murphy.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
4. Deuterium
   Heavy hydrogen, a stable isotope having one proton and one neutron in the nucleus. It occurs in nature as 1 atom to 6500 atoms of normal hydrogen, (Hydrogen atoms contain one proton and no neutrons)
   Found on http://www.encyclo.co.uk/local/20725
   
   
5. Deuterium
   An isotope of hydrogen whose atoms are twice as massive as ordinary hydrogen,deuterion atoms contain both a proton and a neutron in the nucleus.
   Found on http://www.allchemicals.info/index/actio
   
   
6. deuterium
   (D, ²H) An isotope of hydrogen that contains one neutron and one proton in its nucleus.
   Found on http://antoine.frostburg.edu/chem/senese
   
   
7. Deuterium
   The isotope of hydrogen that has one neutron.
   Found on http://www.chemicalglossary.net/definiti
   
   
8. Deuterium
   'Heavy hydrogen', a stable isotope having one proton and one neutron in the nucleus. It occurs in nature as 1 atom to 6500 atoms of normal hydrogen, (Hydrogen atoms contain one proton and no neutrons).
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
9. Deuterium
   ‘Heavy Hydrogen`, an isotope having one proton and one neutron in the nucleus. It occurs in nature as 1 atom to 6,500 atoms of normal hydrogen (hydrogen atoms contain one proton and no neutrons). Deuterium oxide, or Heavy Water, can be used as a moderator in reactors.
   Found on http://www.theiet.org/factfiles/energy/n
   
   
10. Deuterium
    Deuterium: A non-radioactive isotope of hydrogen that contains a neutron in its nucleus in addition to the one proton normally seen in hydrogen. A deuterium atom is twice as heavy as normal hydrogen.
    Found on http://www.medterms.com/script/main/art.
    
    
11. deuterium
    <radiobiology> A heavy isotope of hydrogen whose nucleus contains both a neutron and a proton. ... (09 Oct 1997) ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
12. deuterium
    heavy hydrogen noun an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
13. deuterium
    (D) (doo-tēr´e-әm) the mass 2 isotope of hydrogen; it is available as a gas or heavy water and has been used as a tracer or indicator in metabolic studies.
    Found on http://www.encyclo.co.uk/local/21001
    
    
14. deuterium
    isotope of hydrogen with atomic weight of approximately 2. Its nucleus, consisting of one proton and one neutron, has double the mass of the nucleus ... [13 related articles]
    Found on http://www.britannica.com/eb/a-z/d/37
    
    
15. Deuterium
    Isotope of hydrogen, with a nucleus containing one proton and one neutron, and an atomic mass number of 2.
    Found on http://www.physicalgeography.net/physgeo
    
    
16. Deuterium
    'Heavy Hydrogen', an isotope having one proton and one neutron in the nucleus. It occurs in nature as 1 atom to 6,500 atoms of normal hydrogen, (Hydrogen atoms contain one proton and no neutrons).
    Found on http://www.encyclo.co.uk/local/21076
    
    
17. deuterium
    deuterium (dOOtēr'ēum) , isotope of hydrogen with mass no. 2. The deuterium nucleus, called a deuteron, contains one proton and one neutron. Deuterium is also called heavy hydrogen, and water in which the hydrogen atoms are deuterium is called heavy water (deuterium oxide, D2O). Deut...
    Found on http://www.infoplease.com/ce6/sci/A08153
    
    
18. Deuterium
    In chemistry, deuterium is an isotope of hydrogen having twice the mass of ordinary hydrogen.
    Found on http://www.probertencyclopaedia.com/brow
    
    
19. deuterium
    (D) Type: Term Pronunciation: dū-tē′rē-ŭm Synonyms: hydrogen-2
    Found on http://www.medilexicon.com/medicaldictio
    
    
20. deuterium
    Naturally occurring heavy isotope of hydrogen, mass number 2 (one proton and one neutron), discovered by US chemist Harold Urey in 1932. It is sometimes given the symbol D. In nature, about one in every 6,500 hydrogen atoms is deuterium. Combined with oxygen, it produces `heavy water` (D₂O), used in the nuclear indu...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
21. Deuterium
    An isotope of hydrogen whose atoms are twice as massive as ordinary hydrogen;deuterion atoms contain both a proton and a neutron in the nucleus.
    Found on http://www.chemistry-dictionary.com/defi
    
    
22. Deuterium
    `Deuterium`, also called `heavy hydrogen`, is one of two stable isotopes of hydrogen with a natural abundance in Earth`s oceans of about one ul=ppm-->). Deuterium accounts for approximately 0.0156% (or on a mass basis: 0.0312%) of all naturally occurring hydrogen in Earth`s oceans, while the most co...
    Found on http://en.wikipedia.org/wiki/Deuterium