fusion
Defined in 1 dictionary — U.S. Code
United States Code
42 U.S.C. § 9302 — for the purposes of this chapter
“fusion” means a process whereby two light nuclei, such as deuterium and tritium, collide at high velocity, forming a compound nucleus, which subsequently separates into constituents which are different from the original colliding nuclei, and which carry away the accompanying energy release;