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

Origin of DEUTERIUM

New Latin, from Greek deuteros second
First Known Use: 1933
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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