Materialism: doctrine according to which matter is the sole ultimate ground of being.
In philosophy, not the popular idea of an acquisitive ethic, but of a broader onto-axiology which is also anti-acquisitive – as with Mo Tzu, Helvetius and Marx over 2300 years. Opposed to idealism, it means materiality (space-time occupancy) alone is real and determining, with organic intelligence and scientific method determining legitimate knowledge.
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.