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HF
Definition:
[noun] a gray tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
Synonyms:
hafnium
,
Hf
,
atomic number 72
[noun] 3 to 30 megahertz
Synonyms:
high frequency
,
HF
Synonyms:
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synonyms for HF