Definition of deuterium
: an isotope of hydrogen that has one proton and one neutron in its nucleus and that has twice the mass of ordinary hydrogen —symbol D —called also heavy hydrogen
Recent Examples of deuterium from the Web
No, not robots fashioned of these materials or a new form of nuclear fusion that uses dried out husks and leaves to spark the deuterium-tritium cycle.
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Origin and Etymology of deuterium
New Latin, from Greek deuteros second
First Known Use: 1933See Words from the same year
Medical Definition of deuterium
: an isotope of hydrogen that has one proton and one neutron in its nucleus and that has twice the mass of ordinary hydrogen—called also heavy hydrogen
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