Question

What is a melting point?

Answer 1

The melting point (or, rarely, liquefaction point) of a solid is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends (usually slightly) on pressure and is usually specified at standard pressure. When considered as the temperature of the reverse change from liquid to solid, it is referred to as the freezing point or crystallization point.

Answer 2

 the temperature at which the solid starts to melt is called melting point