Deuterium

2 definitions found

From WordNet (r) 2.0 [wn]:

  deuterium
       n : an isotope of hydrogen which has one neutron (as opposed to
           zero neutrons in hydrogen) [syn: {heavy hydrogen}]

From Elements database 20001107 [elements]:



  deuterium
  Symbol: D
  Atomic Weight: 2
  A {hydrogen} atom which has but one proton and {neutron}. Deuterium makes up
  about 0.015% of all natural hydrogen. Chemical properties are like that of
  normal {hydrogen}, though somewhat slower.