hf
English Thesaurus
1. 3 to 30 megahertz (noun.attribute)
hypernym | : | radio frequency, |
definition | : | an electromagnetic wave frequency between audio and infrared (noun.attribute) |
part meronym | : | electromagnetic spectrum, |
definition | : | the entire frequency range of electromagnetic waves (noun.phenomenon) |
2. a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons (noun.substance)
hypernym | : | metal, metallic element, |
definition | : | any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. (noun.substance) |
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