Library / English Dictionary

HF

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

3 to 30 megahertz

Synonyms:

HF; high frequency

Classified under:

Nouns denoting attributes of people and objects

Hypernyms ("HF" is a kind of...):

radio frequency (an electromagnetic wave frequency between audio and infrared)

Holonyms ("HF" is a part of...):

electromagnetic spectrum (the entire frequency range of electromagnetic waves)

Sense 2

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

Synonyms:

atomic number 72; hafnium; Hf

Classified under:

Nouns denoting substances

Hypernyms ("Hf" is a kind of...):

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.)

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