Definition of deuterium noun from the Oxford Advanced Learner's Dictionary



BrE BrE//djuːˈtɪəriəm//
; NAmE NAmE//djuːˈtɪriəm//
, NAmE//duːˈtɪriəm//
[uncountable](symbol D)(chemistry)
jump to other results
an isotope (= a different form) of hydrogen with twice the mass of the usual isotope Word Origin 1930s: modern Latin, from Greek deuteros ‘second’.
See the Oxford Advanced American Dictionary entry: deuterium