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megahertz

noun [C]
 
 
/ˈmeɡ.ə.hɜːts/ US  /-hɝːts/ (plural megahertz) (written abbreviation MHz)

Definition

a million hertzMiscellaneous units of measurement
(Definition of megahertz noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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