Definition of meitnerium in English:

meitnerium

noun

  • The chemical element of atomic number 109, a very unstable element made by high-energy atomic collisions.

    • ‘The German proposal of ‘meitnerium ‘for 109 was allowed to stand, as were the names proposed for elements 101, 102, and 103 - ‘mendelevium, ‘‘nobelium, ‘and ‘lawrencium, ‘respectively.’’
    • ‘Element 109 is named meitnerium, for Lise Meitner, who was the first to realize that uranium undergoes nuclear fission.’
    • ‘They have anywhere from 13 isotopes to one isotope (e.g., hassium and meitnerium).’
    • ‘Less than 10 atoms of meitnerium have ever been made, and it will probably never be isolated in observable quantities.’
    • ‘None of meitnerium's chemistry has been researched, but it should resemble other elements of group 9, like iridium.’

Origin

Modern Latin, from the name of L. Meitner (see Meitner, Lise).

Pronunciation

meitnerium

/mītˈnirēəm/