francium

From French francium, from France +‎ -ium (after the native country of Marguerite Perey).

• (UK) IPA^(key): /ˈfɹansɪəm/, /ˈfɹɑːnsɪəm/
• (US) enPR: frăn'sēəm, IPA^(key): /ˈfɹænsi.əm/

• Audio (Southern England):

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• Audio (General American):

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francium (usually uncountable, plural franciums)

1. The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.
   • 2003, Bill Bryson, A Short History of Nearly Everything, BCA, page 221:

     The most elusive element of all, however, appears to be francium, which is so rare that it is thought that our entire planet may contain, at any given moment, fewer than twenty francium atoms.

2. (countable) A single atom of this element.
   • 1999, Peter J. Krieger, Understanding Chemical Principles: A Learning Companion, page 56:

     Notice that franciums are balanced without even thinking in moles, atoms, or whatever.

   • 2007, Carl J. Gross, Witold Nazarewicz, Krzysztof P. Rykaczewski, The 4th International Conference on Exotic Nuclei and Atomic Masses, page 180:

     (a) Radons and poloniums are compared, (b) poloniums and astatines are compared and (c) radons and franciums are compared.

• actinium-K (obsolete)
• virginium (obsolete)

• eka-francium

• Francium on the British Royal Society of Chemistry's online periodic table

• IPA^(key): [ˈfrant͡sɪjum]

francium n

1. francium

From Medieval Latin Francia +‎ -ium.

francium n (singular definite franciummet, not used in plural form)

1. francium

• “francium” in Den Danske Ordbog

• IPA^(key): /ˈfrɑn.(t)si.ʏm/, /ˈfrɑŋ.ki.ʏm/

• Audio:

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francium n (uncountable)

1. francium

• IPA^(key): /fʁɑ̃.sjɔm/

francium m (uncountable)

1. francium

• “francium”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

• IPA^(key): [ˈfrɒnt͡sijum]
• Hyphenation: fran‧ci‧um
• Rhymes: -um

francium (usually uncountable, plural franciumok)

1. francium (chemical element)

• (Classical Latin) IPA^(key): [ˈfraŋ.ki.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈfran̠ʲ.t͡ʃi.um]

francium n (genitive franciī); second declension

1. francium

Second-declension noun (neuter).

• IPA^(key): /ˈfrant͡sɪjʊm/

• Audio:

  (file)

francium n

1. francium (element)

• “francium”, in Slovníkový portál Jazykovedného ústavu Ľ. Štúra SAV [Dictionary portal of the Ľ. Štúr Institute of Linguistics, Slovak Academy of Science] (in Slovak), https://slovnik.juls.savba.sk, 2003–2025

francium n (uncountable)

1. francium

• francium in Svenska Akademiens ordlista (SAOL)
• Svensk MeSH