strong interaction; strong force
Physics term for the fundamental force that binds quarks together inside protons and neutrons, and holds the atomic nucleus together. Often contrasted with 弱い力 (weak force).
See also: 強い相互作用
The strong force binds protons and neutrons together inside the atomic nucleus.
Quarks are bound together by the strong interaction.
Compound of 強い (strong) and 力 (force), a direct translation of the English physics term 'strong force'.