English dictionary
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English noun: Hf | |||
| 1. | Hf (substance) a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons | ||
| Synonyms | atomic number 72, hafnium | ||
| Broader (hypernym) | metal, metallic element | ||
| 2. | HF (attribute) 3 to 30 megahertz | ||
| Synonyms | high frequency | ||
| Broader (hypernym) | radio frequency | ||
| Part meronym | electromagnetic spectrum | ||
Based on WordNet 3.0 copyright © Princeton University.
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Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk