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Definisjon av actinium

Vi fant 4 definisjoner av actinium på engelsk.

Annonsering

WordNet WordNet by Princeton University

Noun
actinium - a radioactive element of the actinide series; found in uranium ores
Ac, atomic number 89
chemical element, element the most favorable environment for a plant or animal; "water is the element of fishes"
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= antonym
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Wiktionary Wiktionary dictionary logo

Substantiv
actinium - A radioactive, metallic chemical element symbol: Ac with an atomic number of 89; found in uranium ores.

Wikipedia Wiktionary dictionary logo

  • Actinium is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899. It was the first non-primordial radioactive element to be isolated. Polonium, radium and radon were observed before actinium, but they were not isolated until 1902.

OmegaWiki Dictionary Ω

  • actinium
    A radioactive element of the actinide series, occurring as a decay product of uranium. It is used as an alpha particle source and in neutron production.\n(Source: CED)

Substantiv

  • Entall: actinium
  • Flertall: actiniums

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