actinium

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See also: Actinium

English[edit]

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

Etymology[edit]

Borrowed from French actinium. actin- +‎ -ium

Pronunciation[edit]

Noun[edit]

actinium (uncountable)

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

Derived terms[edit]

Related terms[edit]

Translations[edit]


Danish[edit]

Alternative forms[edit]

Noun[edit]

actinium

  1. actinium

Dutch[edit]

Dutch Wikipedia has an article on:
Wikipedia nl
Chemical element
Ac
Previous: radium (Ra)
Next: thorium (Th)

Etymology[edit]

Borrowed from French actinium.

Pronunciation[edit]

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

Noun[edit]

actinium n (uncountable)

  1. actinium [from ca. 1900]

Related terms[edit]


French[edit]

French Wikipedia has an article on:
Wikipedia fr

Pronunciation[edit]

Noun[edit]

actinium m (uncountable)

  1. actinium

Further reading[edit]


Latin[edit]

Latin Wikipedia has an article on:
Wikipedia la

Etymology[edit]

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

Pronunciation[edit]

Noun[edit]

actīnium n (genitive actīniī); second declension

  1. actinium

Declension[edit]

Second-declension noun (neuter).

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

Norwegian Bokmål[edit]

Chemical element
Ac
Previous: radium (Ra)
Next: thorium (Th)
Norwegian Bokmål Wikipedia has an article on:
Wikipedia nb
Electron shell diagram for Actinium, the 89th element in the periodic table of elements.

Etymology[edit]

First part actin- from Ancient Greek ἀκτίς (aktís, ray, beam), from Proto-Hellenic [Term?], from Proto-Indo-European *nókʷ-t-u-s ~ *n̥kʷ-t-éw-s, from *nókʷts (night), from *negʷ- (bare, naked). Last part from Latin -ium (forms names of chemical elements), from -ius (forms adjectives), from Old Latin -iōs, from Proto-Italic *-jos (forms comparative adverbs), from Proto-Indo-European *-yōs ~ *-is- (forms adjectives).

Pronunciation[edit]

  • IPA(key): /akˈtiːnɪʉm/
  • (file)
  • Rhymes: -ʉm
  • Hyphenation: ac‧ti‧ni‧um

Noun[edit]

actinium n (definite singular actiniumet, indefinite plural actinium, definite plural actiniuma or actiniumene)

  1. (organic chemistry) actinium (a radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores)
    • 2015, periodesystemet.no:
      actinium får nitrogenet i luften til å lyse blått
      actinium causes the nitrogen in the air to glow blue

References[edit]