Definition of megahertz in US English:


(also MHz)


  • One million hertz, especially as a measure of the frequency of radio transmissions or the clock speed of a computer.

    • ‘The bandwidth of 100 megahertz was divided up into 256 closely adjacent carrier frequencies that do not interfere with one another.’
    • ‘Processor speed, which is measured in megahertz is only one factor affecting the performance of a computer.’
    • ‘The speed of processors, usually known as clock speed, is measured in megahertz or these days in gigahertz (GHz).’
    • ‘The tiny dimensions of the device allowed it to vibrate quickly, achieving a millions-of-cycles-per-second frequency of 23.57 megahertz.’
    • ‘The switching frequency of 1 megahertz makes it possible to select a small external component.’