protactinium

See also: Protactinium

English
Chemical element
Pa
Previous: thorium (Th)
Next: uranium (U)

Etymology

proto- +‎ actinium.

Pronunciation
  • (UK) IPA(key): /ˌpɹəʊ.tækˈtɪn.i.əm/
  • (US) enPR: prō"tăktĭ'nēəm, IPA(key): /ˌpɹoʊ.tækˈtɪn.i.əm/
  • Audio (US)(file)

Noun

protactinium (uncountable)

  1. A chemical element (symbol Pa) with atomic number 91: a dense, silvery-gray actinide metal.

Usage notes

It was called protoactinium until 1949. Then the name was shortened.

Synonyms

Derived terms

Translations

Danish

Noun

protactinium

  1. protactinium

Dutch
Chemical element
Pa
Previous: thorium (Th)
Next: uranium (U)

Pronunciation
  • Audio(file)

Noun

protactinium n (uncountable)

  1. protactinium

French

Pronunciation
  • IPA(key): /pʁɔ.tak.ti.njɔm/

Noun

protactinium m (uncountable)

  1. protactinium

Further reading

Latin

Pronunciation

Noun

prōtactīnium n (genitive prōtactīniī); second declension

  1. protactinium

Declension

Second-declension noun (neuter).

Case Singular Plural
Nominative prōtactīnium prōtactīnia
Genitive prōtactīniī prōtactīniōrum
Dative prōtactīniō prōtactīniīs
Accusative prōtactīnium prōtactīnia
Ablative prōtactīniō prōtactīniīs
Vocative prōtactīnium prōtactīnia
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