Fusion
Related Category: Physics
in physics.
1 The change of a substance from the solid to the liquid state, also known as melting. The heat given up by a unit mass of a substance during fusion is called the
latent heat of fusion. See also
melting point.
2 The combining of two light atomic nuclei to form a single heavier
nucleus, with the release of energy. See
nuclear energy;
hydrogen bomb;
cold fusion.
