| NOUN | substance | hafnium, Hf, atomic number 72 | a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals |
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| Sounds | hhae'fniyahm | |
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| Rhymes | abolitionism ... zirconium: 552 rhymes with ahm... | |
| Meaning | A grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons. | |
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| Synonyms | Hf, atomic number 72 | |
| Broader | metallic element, metal | Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |