From Longman Dictionary of Contemporary Englishparticle acceleratorˈparticle acˌcelerator noun [countable] HPa machine used in scientific studies which makes the very small pieces of matter that atoms are made of move at high speeds
Examples from the Corpus
particle accelerator• If you really want to be devious, you could spend the money on a particle accelerator.• A particle accelerator can cost up to f500,000. 