Pronunciation: (foun-dā'shun),[key] —n. 1. the basis or groundwork of anything: the moral foundation of both society and religion. 2. the natural or prepared ground or base on which some structure rests.
3. the lowest division of a building, wall, or the like, usually of masonry and partly or wholly below the surface of the ground.
4. the act of founding, setting up, establishing, etc.: a policy in effect since the foundation. 5. the state of being founded.
6. an institution financed by a donation or legacy to aid research, education, the arts, etc.: the Ford Foundation. 7. an endowment for such an institution.
8. a cosmetic, as a cream or liquid, used as a base for facial makeup.
9. See foundation garment. 10. Solitaire.a card of given denomination on which other cards are to be added according to denomination or suit.