/ Thesaurus / H Synonyms of high energy physics Find synonyms for: Noun1. particle physics, high-energy physics, high energy physics, physics, natural philosophyusage: the branch of physics that studies subatomic particles and their interactionsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language