ruth·er·for·di·um (r    r-fôr d -m, -f r-)n. Symbol Rf An artificially produced radioactive element with atomic number 104 whose most long-lived isotopes have mass numbers of 253, 255, 257, and 259 with half-lives of 1.8, 1.6, 4.7, and 3.4 seconds, respectively. See Table at element. [After Ernest Rutherford.] |
rutherfordium
Noun
chem an artificially produced radioactive element Symbol: Rf[after E. Rutherford, physicist]
| rutherfordium (rthr-fôrd-m) Symbol Rf A synthetic, radioactive element that is produced by bombarding plutonium with carbon or neon ions. Its most stable isotope is Rf 261 with a half-life of 62 seconds. Atomic number 104. See Periodic Table. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  rutherfordium - a radioactive transuranic element which has been synthesizedchemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
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