dubniumn.

Brit.

/ˈdʌbnɪəm/,

/ˈdʊbnɪəm/, U.S.

/ˈdubniəm/

Origin: From a proper name, combined with an English element. Etymons: proper name Dubna , -ium suffix.

Etymology: < the name of the town of Dubna near Moscow in Russia, site of the Joint Institute for Nuclear Research where dubnium was created + -ium suffix.

1. (A name proposed for) an artificially produced transuranic chemical element, atomic number 104 (now called rutherfordium). Now disused.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > rutherfordium > [noun]

kurchatovium1967

rutherfordium1969

Rf1970

dubnium1994

1994 San Francisco Chron. (Nexis) 11 Oct. a19 Ghiorso and Seaborg have nothing against Rutherford, said Ghiorso, pointing out that he was the one who suggested the name rutherfordium for Element 104, which is renamed dubnium in the new suggested list.

1995 Sci. Amer. Mar. 13/2 Number 104 was previously known as rutherfordium, except by some Russian scientists who referred to it as kurchatovium. Now the recommended name is dubnium.

2011 J. Keats Virtual Words i. 6 The IUPEC [sic] proposed that element 104 be named dubnium after Dubna... For three more years the parties quarreled, finally agreeing that element 104 should be called rutherfordium.

2. A radioactive transuranic chemical element, atomic number 105, produced artificially. Symbol Db.Previously given the provisional name unnilpentium: see un- comb. form. Formerly called hahnium and nielsbohrium. The name joliotium was also proposed.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > hahnium > [noun]

hahnium1970

bohrium1971

nielsbohrium1973

dubnium1997

1997 N.Y. Times (Nexis) 4 Mar. c6/5 Subject to confirmation by the union's members at a meeting in Geneva next August, these will be the names of the six new elements: Element 104, Rutherfordium (symbol Rf); Element 105, Dubnium (symbol Db) [etc.].

2000 Chem. Rev. 100 2288/1 Of the transactinides, rutherfordium (Rf), dubnium (Db), and seaborgium (Sg) have been shown to form stable, volatile hexahalides.

2005 Mendeleev Communications 15 1 (title) Chemical identification of dubnium as a decay product of element 115 produced in the reaction ⁴⁸Ca + ²⁴³Am.

This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	dubnium
释义	dubniumn. Brit. /ˈdʌbnɪəm/, /ˈdʊbnɪəm/, U.S. /ˈdubniəm/ Origin: From a proper name, combined with an English element. Etymons: proper name Dubna , -ium suffix. Etymology: < the name of the town of Dubna near Moscow in Russia, site of the Joint Institute for Nuclear Research where dubnium was created + -ium suffix. 1. (A name proposed for) an artificially produced transuranic chemical element, atomic number 104 (now called rutherfordium). Now disused. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > rutherfordium > [noun] kurchatovium1967 rutherfordium1969 Rf1970 dubnium1994 1994 San Francisco Chron. (Nexis) 11 Oct. a19 Ghiorso and Seaborg have nothing against Rutherford, said Ghiorso, pointing out that he was the one who suggested the name rutherfordium for Element 104, which is renamed dubnium in the new suggested list. 1995 Sci. Amer. Mar. 13/2 Number 104 was previously known as rutherfordium, except by some Russian scientists who referred to it as kurchatovium. Now the recommended name is dubnium. 2011 J. Keats Virtual Words i. 6 The IUPEC [sic] proposed that element 104 be named dubnium after Dubna... For three more years the parties quarreled, finally agreeing that element 104 should be called rutherfordium. 2. A radioactive transuranic chemical element, atomic number 105, produced artificially. Symbol Db.Previously given the provisional name unnilpentium: see un- comb. form. Formerly called hahnium and nielsbohrium. The name joliotium was also proposed. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > hahnium > [noun] hahnium1970 bohrium1971 nielsbohrium1973 dubnium1997 1997 N.Y. Times (Nexis) 4 Mar. c6/5 Subject to confirmation by the union's members at a meeting in Geneva next August, these will be the names of the six new elements: Element 104, Rutherfordium (symbol Rf); Element 105, Dubnium (symbol Db) [etc.]. 2000 Chem. Rev. 100 2288/1 Of the transactinides, rutherfordium (Rf), dubnium (Db), and seaborgium (Sg) have been shown to form stable, volatile hexahalides. 2005 Mendeleev Communications 15 1 (title) Chemical identification of dubnium as a decay product of element 115 produced in the reaction ⁴⁸Ca + ²⁴³Am. This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1994
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