Definitions for hafnium
ˈhæf ni əm, ˈhɑf-hafni·um

Princeton's WordNetRate this definition:0.0 / 0 votes

1. hafnium, Hf, atomic number 72noun

   a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons

WiktionaryRate this definition:0.0 / 0 votes

1. hafniumnoun

   a metallic chemical element (symbol Hf) with an atomic number of 72.

2. Etymology: Hafnia, Copenhagen

WikipediaRate this definition:0.0 / 0 votes

1. Hafnium

   Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1923, by Dirk Coster and George de Hevesy, making it the penultimate stable element to be discovered (the last being rhenium in 1925). Hafnium is named after Hafnia, the Latin name for Copenhagen, where it was discovered.Hafnium is used in filaments and electrodes. Some semiconductor fabrication processes use its oxide for integrated circuits at 45 nanometers and smaller feature lengths. Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten. Hafnium's large neutron capture cross section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors.

ChatGPTRate this definition:0.0 / 0 votes

1. hafnium

   Hafnium is a chemical element with the symbol Hf and atomic number 72. It is a lustrous, silvery gray, tetravalent transition metal that chemically resembles zirconium and is found in many zirconium minerals. Hafnium is usually used for control rods in nuclear reactors and reactors in submarines due to its ability to absorb neutrons and its resistance to corrosion. Additionally, its alloys can withstand very high temperatures, making it useful in items such as rocket nozzles and furnace linings.

WikidataRate this definition:0.0 / 0 votes

1. Hafnium

   Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869. Hafnium was the penultimate stable isotope element to be discovered. Hafnium is named after Hafnia, the Latin name for "Copenhagen", where it was discovered. Hafnium is used in filaments and electrodes. Some semiconductor fabrication processes use its oxide for integrated circuits at 45 nm and smaller feature lengths. Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten. Hafnium's large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Hafnium

   Hafnium. A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. (From Dorland, 28th ed)

Matched Categories

1. • Metallic Element

Usage in printed sourcesFrom: 

1. [["1893","1"],["1910","3"],["1921","1"],["1922","2"],["1923","62"],["1924","45"],["1925","44"],["1926","42"],["1927","218"],["1928","86"],["1929","96"],["1930","104"],["1931","48"],["1932","990"],["1933","34"],["1934","73"],["1935","85"],["1936","50"],["1937","57"],["1938","93"],["1939","459"],["1940","145"],["1941","20"],["1942","52"],["1943","98"],["1944","36"],["1945","116"],["1946","248"],["1947","187"],["1948","156"],["1949","245"],["1950","369"],["1951","320"],["1952","123"],["1953","239"],["1954","737"],["1955","1092"],["1956","346"],["1957","674"],["1958","519"],["1959","779"],["1960","983"],["1961","1758"],["1962","1344"],["1963","1752"],["1964","841"],["1965","733"],["1966","1790"],["1967","501"],["1968","884"],["1969","739"],["1970","891"],["1971","723"],["1972","658"],["1973","503"],["1974","356"],["1975","714"],["1976","429"],["1977","489"],["1978","383"],["1979","609"],["1980","1140"],["1981","546"],["1982","596"],["1983","545"],["1984","909"],["1985","546"],["1986","410"],["1987","537"],["1988","655"],["1989","1140"],["1990","484"],["1991","591"],["1992","955"],["1993","500"],["1994","1186"],["1995","589"],["1996","863"],["1997","941"],["1998","448"],["1999","623"],["2000","528"],["2001","1036"],["2002","850"],["2003","1136"],["2004","649"],["2005","681"],["2006","1320"],["2007","1022"],["2008","590"]]

How to pronounce hafnium?

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Numerology

1. Chaldean Numerology

   The numerical value of hafnium in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of hafnium in Pythagorean Numerology is: 9

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=hafnium
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Hafnium
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Hafnium
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=hafnium
6. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=hafnium