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colliding-beam machine

American  
[kuh-lahy-ding-beem] / kəˈlaɪ dɪŋˈbim /

noun

Physics.

  1. a particle accelerator in which positively and negatively charged particles circulate in opposite directions and collide head-on.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.