Definitions for "Binding energy"
The reduction in the free energy of a system that occurs when a ligand binds to a receptor. Generally used to describe the total energy required to remove something, or to take a system apart into its constituent particles--for example, to separate two atoms from one another, or to separate an atom into electrons and nuclei.
The energy released when the nucleus of an atom is formed by combining neutrons and protons.
The energy that is required to separate the nucleons in a nucleus into separate, free particles.