megavoltn.
/ˈmɛɡəvəʊlt/, /ˈmɛɡəvɒlt/, U.S. /ˈmɛɡəˌvoʊlt/ One million volts.
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the world > matter > physics > electromagnetic radiation > electricity > voltage > electrical potential > [noun] > unit of electromotive force > measurements
kilovolt1861
millivolt1861
megavolt1868
volt1873
kilovolt-ampere1909
mV1926
kilovoltage1933
MV1937
TeV1956
tera-electron-volt1974
1868 J. L. Clark Elem. Treat. Electr. Measurem. vii. 43 The unit of tension, or electromotive force, is called the volt... One million volts = 1 megavolt, and one millionth of a volt = 1 microvolt.
1924 C. R. Underhill Magnets i. 11 The volt per microcoulomb or the megavolt per coulomb.
1957 Technology July 181/1 A research physicist at work on the 450 megavolt synchro-cyclotron.
1992 New Yorker 9 Mar. 30/3 A thousand megavolts of crackling nirvana screamed through his skull, hoovering his ion channels.
This entry has been updated (OED Third Edition, June 2001; most recently modified version published online March 2022).
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n.1868