actinium

See also: Actinium

English
Chemical element
Ac Previous: radium (Ra)
Next: thorium (Th)

Etymology

Borrowed from French actinium. actin- +‎ -ium

Pronunciation
  • enPR: ăktĭn'ēəm, IPA(key): /ækˈtɪniəm/

Noun

actinium (uncountable)

  1. a radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores

Derived terms
Derived terms
  • actinide
  • actinium A
  • actinium B
  • actinium C
  • actinium fluoride
→

Translations

Danish

Alternative forms

Noun

actinium

  1. actinium

Dutch
Chemical element
Ac Previous: radium (Ra)
Next: thorium (Th)

Etymology

Borrowed from French actinium.

Pronunciation
  • IPA(key): /ɑkˈti.ni.ʏm/
  • Audio(file)
  • Hyphenation: ac‧ti‧ni‧um

Noun

actinium n (uncountable)

  1. actinium [from ca. 1900]

French

Pronunciation
  • IPA(key): /ak.ti.njɔm/

Noun

actinium m (uncountable)

  1. actinium

Further reading

Latin

Etymology

From Ancient Greek ἀκτίς, ἀκτῖν- (aktís, aktîn-, “ray”).

Pronunciation
  • (Classical) IPA(key): /akˈtiː.ni.um/, [akˈtiː.ni.ũ]
  • (Ecclesiastical) IPA(key): /akˈti.ni.um/, [akˈtiː.ni.um]
  • Audio (ecclesiastical)(file)

Noun

actīnium n (genitive actīniī); second declension

  1. actinium

Inflection

Second declension.

Case Singular Plural
Nominative actīnium actīnia
Genitive actīniī actīniōrum
Dative actīniō actīniīs
Accusative actīnium actīnia
Ablative actīniō actīniīs
Vocative actīnium actīnia
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