What is latent heat of fusion?

Melting point due to the application of heat, the solid remains unchanged until all the substances transform into a liquid. Here, the amount of heat required to transform the solid into a liquid is defined as the latent heat of fusion. This energy does not change the temperature of the solid but is used to loosen the intermolecular bonds of the solid. The latent heat of fusion of ice is 336000 J/kg