protium

English dictionary entry

Meanings

noun
  1. The lightest and most common isotope of hydrogen, having a single proton and no neutrons: 11H. It is the only stable nuclide with no neutrons.
  2. An atom of this isotope.

Pronunciation

/ˈpɹəʊ.tiəm/ /ˈpɹoʊ.tiəm/ LL-Q1860 (eng)-Neøn-protium.wav

Word forms

protium protiums

Etymology

From proto- + -ium. From Ancient Greek πρῶτος (prôtos, “first”).

Related words

Derived words

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