specific

heat capacity n. Heat required to raise the temperature of the unit mass of a given substance by a given amount (usu. One degree).

a. Of or pertaining to a species; characterizing or constituting a species; possessing the peculiar property or properties of a thing which constitute its species, and distinguish it from other things; as, the specific form of an animal or a plant; the specific qualities of a drug; the specific distinction between virtue and vice.