foundational

noun

1. a founding or being founded; establishment
2. 1. an organization established to maintain, assist, or finance institutions or projects of a social, educational, charitable, religious, etc. nature, as by the making of grants
   2. the fund or endowment used by such an organization to carry out its programs
   3. an institution maintained by such a fund
3. the base on which something rests; specif., the supporting part of a wall, house, etc., usually of masonry, concrete, etc., and at least partially underground
4. the fundamental principle on which something is founded; basis
5. a supporting material or part beneath an outer part
6. foundation garment
7. a cosmetic cream, liquid, etc. over which other makeup is applied