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English definition of “deuterium”

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deuterium

noun [U] uk   /djuːˈtɪə.ri.əm/ us    /-tɪr-/ specialized
an isotope of hydrogen that is twice the mass of ordinary hydrogen: The nucleus of a deuterium atom contains a proton and a neutron.
Translations of “deuterium”
in Chinese (Traditional) 重氫,氘(氫的同位素,質量是普通氫的兩倍)…
in Chinese (Simplified) 重氢(氢的同位素,质量是普通氢的两倍)…
(Definition of deuterium from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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