Substance: Classically, in Western metaphysics, individual realities in which different accidental properties inhere, as for example ‘this apple’ in which inheres redness,etc.

Source: What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.