DUBNIUM

dubnium, Db, hahnium, element, atomic number

(noun) a transuranic element

Source: WordNet® 3.1

Etymology

Noun

dubnium (uncountable)

A transuranic chemical element (symbol Db) with atomic number 105.

(chemistry, obsolete) A rejected name for rutherfordium.

Synonyms

• eka-tantalum (used before the element was discovered)

• hahnium (proposed by American scientists, but rejected; still used by some Western scientists; see also hassium)

• joliotium (proposed by the IUPAC, but rejected)

• nielsbohrium (proposed by Russian scientists, but rejected)

• unnilpentium (used before the element had been officially named to avoid disputes between Western and Russian scientists over "hahnium" and "dubnium" respectively)

Source: Wiktionary

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