Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An artificially produced radioactive element with atomic number 104 that has only been produced in trace amounts. The isotope with mass number 261 has the longest confirmed half-life (65 seconds), although isotopes with longer half-lives have been reported. cross-reference: Periodic Table.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A transuranic chemical element (symbol Rf) with an atomic number of 104
  • noun obsolete A rejected name for seaborgium

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a radioactive transuranic element which has been synthesized

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[After Ernest Rutherford.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Named for Ernest Rutherford

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Examples

  • Since 104 was already rutherfordium, IUPAC renamed L04 dubnium, for the Russian team that claims it discovered that element years ago.

    All In A Name 2008

  • But in a fit of regionalism, Europeans running the International Union of Pure and Applied Chemistry named 106 rutherfordium, for the British father of the atom.

    All In A Name 2008

  • Researchers at Lawrence Berkeley National Laboratory in California saw the isotopes of rutherfordium, seaborgium, hassium, darmstadtium, and copernicium by watching the decay of the yet-to-be-named element 114, a synthetic element first produced about a decade ago.

    Wired Top Stories Marissa Cevallos 2010

  • This virtual web server sturdiness diploidy your rutherfordium off with hot dextrose, leader, orthodontic succory, fatalistic christ, and noiselessly.

    Rational Review 2009

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