deuterium

English dictionary entry

Meanings

noun
  1. An isotope of hydrogen with one proton and one neutron in each atom - 21H.
  2. An atom of this isotope.

Pronunciation

/djuːˈtɪəɹɪəm/ /dʒuːˈtɪəɹɪəm/ LL-Q1860 (eng)-Vealhurl-deuterium.wav /djuːˈtɪɹi.əm/

Word forms

deuterium deuteriums

Etymology

From deutero- + -ium. Coined by American physical chemist Harold Urey, from Ancient Greek δεύτερος (deúteros, “second”).

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