Definition of megahertz
: a unit of frequency equal to one million hertz —abbreviation MHz
Recent Examples of megahertz from the Web
Also at the May 22 meeting, the Council approved the purchase of new radios that operate on the 800 megahertz to replace VHF radios.
Each will contain chips running at 8 megahertz and accelerometers designed to measure movement caused by strong gusts.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'megahertz'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of megahertz
International Scientific Vocabulary
First Known Use: 1941
MEGAHERTZ Defined for English Language Learners
Definition of megahertz for English Language Learners
: a unit of radio frequency equal to one million hertz
Medical Definition of megahertz
: one million hertz—abbreviation MHz
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