英和和英

語源

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

発音

• (英国発音) IPA: /ˈpɹəʊ.tiəm/
• (米国発音) IPA: /ˈpɹoʊ.tiəm/
• 韻: -əʊtiəm

名詞

protium (plural protiums)

1. (physics) 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.

   Synonyms: H-1, ¹H, hydrogen, hydrogen-1, hydrogen 1, light hydrogen, normal hydrogen

   Hypernyms: hydrogen, H (synonymous when without any qualifier)

   Coordinate terms: H-2, ²H, D, deuterium, hydrogen-2, hydrogen 2, heavy hydrogen (2 nucleons); H-3, ³H, T, tritium, hydrogen-3, hydrogen 3 (3 nucleons); H-4, ⁴H, Q, quadrium, hydrogen-4, hydrogen 4 (4 nucleons); hyperhydrogen

   So far there are no differences among the protiums extracted at various labs, except for concentration levels.

2. An atom of this isotope.

   This radioactive decay leaves behind a protium as well.

派生語

関連する語

名詞

prōtium n (genitive prōtiī or prōtī); second declension

1. protium

語形変化

Second-declension noun (neuter).

Found in older Latin (until the Augustan Age).