[ kal-uh-fawr-nee-uh m ]
/ ˌkæl əˈfɔr ni əm /

noun Chemistry.

a transuranic element. Symbol: Cf; atomic number: 98.

Origin of californium

1945–50; named after the University of California where it was discovered; see -ium Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for californium


/ (ˌkælɪˈfɔːnɪəm) /


a metallic transuranic element artificially produced from curium. Symbol: Cf; atomic no: 98; half-life of most stable isotope, 251 Cf: 800 years (approx.)

Word Origin for californium

C20: New Latin; discovered at the University of California
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

Medicine definitions for californium


[ kăl′ə-fôrnē-əm ]

n. Symbol Cf

A synthetic radioactive element produced in trace quantities by neutron bombardment of curium. Its most stable isotope, Cf 251, has a half-life of 790 years. Atomic number 98.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for californium


[ kăl′ə-fôrnē-əm ]


A synthetic, radioactive metallic element of the actinide series that is produced from curium or berkelium and is used in chemical analyses. Its most stable isotope, Cf 251, has a half-life of 800 years. Atomic number 98. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.