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Meaning of binding energy

bind'ing en"ergy

Pronunciation: [key]
— Physics. Physics.
  1. Also calledthe energy required to decompose a molecule, atom, or nucleus into its constituent particles, equal to the energy equivalent of the mass defect.
  2. the energy required to separate a single particle or group of particles from a molecule, atom, or nucleus. Cf. mass defect.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.