Definition of hahnium in English:

hahnium

Syllabification: hahn·i·um
Pronunciation: /ˈhänēəm
 
/

noun

The name formerly proposed by the American Chemical Society for the chemical element of atomic number 105 ( dubnium), and by IUPAC for element 108 ( hassium).
More example sentences
  • The heaviest element whose discovery has been previously confirmed is element 105, hahnium.
  • The name ‘bohrium ‘was recommended for 107 (instead of GSI's choice of nielsbohrium), and ‘hahnium ‘for 108 (instead of GSI's choice of hassium).’
  • Some scientists still use the earlier name of hahnium because it had been used for about 25 years.

Origin

1970s: named in honor of O. Hahn (see Hahn, Otto).

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Pronunciation: ˌmɪdəˈlɛs(ə)nt
adjective
middle-aged, but still maintaining youthful interests and activities