Large Particle Collider in Switzerland and France
Puzzle 20 of Yoga Hard Pack
Question is: Large Particle Collider in Switzerland and France
and the answer is: HADRON
Word Meaning:
HADRON — (particle physics) A composite particle that comprises two or more quarks held together by the strong force and (consequently) can interact with other particles via said force; a meson or a baryon.
Definitions from Wiktionary.