hf - Definition, Synonyms, and Reference from OnPedia.com

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hf (enc)

Noun	1.	Hf - a gray tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons atomic number 72, hafnium metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
	2.	HF - 3 to 30 megahertz high frequency radio frequency - an electromagnetic wave frequency between audio and infrared electromagnetic spectrum - the entire frequency range of electromagnetic waves

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