'dubnium' definitions:

Definition of 'dubnium'

From: WordNet
noun
A transuranic element [syn: dubnium, Db, hahnium, element 105, atomic number 105]

Definition of 'dubnium'

From: Elements
  • Symbol: Db
  • Competing name for unnilquadium, the 104th element, proposed by the IUPAC. Finally in 1997 the IUPAC decided to use Dubnium as the official name of the 105th element.