Pronunciation: (vol'un-tu-riz"um), [key]
1. Philos.any theory that regards will as the fundamental agency or principle, in metaphysics, epistemology, or psychology.
2. the principle or practice of supporting churches, schools, hospitals, etc., by voluntary contributions or aid instead of relying on government assistance.
3. any policy or practice based on voluntary action.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.