rutherfordium

[ ruhth-er-fawr-dee-uhm, -fohr-, ruhth- ]
/ ˌrʌð ərˈfɔr di əm, -ˈfoʊr-, ˌrʌθ- /

noun Chemistry, Physics.

a superheavy, synthetic, radioactive element with a very short half-life.Symbol: Rf; atomic number: 104.

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Formerly un·nil·qua·di·um [uhn-uhn-kwah-dee-uhm], /ˌʌn ənˈkwɑ di əm/, el·e·ment 104 .

Origin of rutherfordium

First recorded in 1965–70; named after English physicist Ernest Rutherford.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for rutherfordium

rutherfordium
/ (ˌrʌðəˈfɔːdɪəm) /

noun

a transactinide element produced by bombarding californium-249 nuclei with carbon-12 nuclei. Symbol: Rf; atomic number.: 104; atomic wt: 261Name in the former Soviet Union: kurchatovium

Word Origin for rutherfordium

C20: named after Ernest Rutherford
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for rutherfordium

rutherfordium
[ rŭð′ər-fərdē-əm ]

n. Symbol Rf

A radioactive synthetic element whose longest-lived isotopes haved mass numbers of 253, 255, 257, and 259 with half-lives of 1.8, 1.6, 4.7, and 3.4 seconds. Atomic number 104.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for rutherfordium

rutherfordium
[ rŭð′ər-fôrdē-əm ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.