be·​ta·​tron ˈbā-tə-ˌträn How to pronounce betatron (audio)
: an accelerator in which electrons are propelled by the inductive action of a rapidly varying magnetic field

Word History


International Scientific Vocabulary

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of betatron was in 1941

Dictionary Entries Near betatron

Cite this Entry

“Betatron.” Dictionary, Merriam-Webster, Accessed 20 Jun. 2024.

Kids Definition


be·​ta·​tron ˈbāt-ə-ˌträn How to pronounce betatron (audio)
: a device that speeds up electrons by the action of a rapidly changing magnetic field

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