Meitnerium
[mahyt-nur-ee-uh m] /maɪtˈnɜr i əm/
noun, Chemistry, Physics.
1.
a superheavy, synthetic, radioactive element. Symbol: Mt; atomic number: 109.
/ˈmaɪtnɪərɪəm/
noun
1.
a synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Mt; atomic no: 109
meitnerium
(mīt-nûr’ē-əm)
Symbol Mt
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.
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