particle accelerator
From Longman Dictionary of Contemporary EnglishRelated topics: Physicsparticle 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 speedsExamples from the Corpusparticle 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.