I think you mean 'specific heat'. Well, the exact definition is, ' It is defined as the amount of thermal energy required to raise the temperature of a unit mass (1kg) of a substance by I K or I (degree) C.
Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to a given mass of a material to produce a unit change in its temperature. The SI unit of heat capacity is joule per kelvin. Heat capacity is an extensive property.
