[ mahyt-nur-ee-uhm ]
/ maɪtˈnɜr i əm /
noun Chemistry, Physics.
a superheavy, synthetic, radioactive element. Symbol: Mt; atomic number: 109.
LEARN THE SPANISH WORDS FOR THESE COMMON ANIMALS!
Are you learning Spanish? Or do you just have an interest in foreign languages? Either way, this quiz on Spanish words for animals is for you.
Question 1 of 13
How do you say “cat” 🐈 in Spanish?
Formerly un·ni·len·ni·um [yoo-ni-len-ee-uhm], /ˌyu nɪˈlɛn i əm/, el·e·ment 109 .
Origin of meitnerium
First recorded in 1990–95; named after Austrian physicist Lise Meitner.
Words nearby meitnerium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for meitnerium
/ (ˈmaɪtnɪərɪəm) /
a synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Mt; atomic no: 109
Word Origin for meitnerium
C20: named after Lise Meitner
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 meitnerium
[ mīt-nûr′ē-əm ]
n. Symbol Mt
A radioactive synthetic element whose longest-lived isotopes have mass numbers of 266 and 268 with half-lives of 3.4 milliseconds and 70 milliseconds. Atomic number 109.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for meitnerium
[ mīt-nûr′ē-əm ]
A synthetic, radioactive element that is produced by bombarding bismuth with iron ions. Its most long-lived isotopes have mass numbers of 266 and 268 with half-lives of 3.4 milliseconds and 70 milliseconds, respectively. Atomic number 109. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.