First Known Use: 1933
Dictionary
deuterium
noun deu·te·ri·um \dü-ˈtir-ē-əm also dyü-\
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
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Origin of DEUTERIUM
New Latin, from Greek deuteros second
Medical Dictionary
deuterium
noun deu·te·ri·um \d(y)ü-ˈtir-ē-əm\
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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