korkeaenergeettisissä
"korkeaenergeettisissä" is a Finnish adjective meaning "high-energy." It is the inessive plural form of "korkeaenergeettinen," which itself is a compound word derived from "korkea" (high) and "energeettinen" (energetic).
This term is commonly used in scientific contexts, particularly in physics and chemistry, to describe particles,
The concept of high-energy is relative and depends on the specific field of study. What is considered