foundational
adjective(foun-da-tion-al)
of, relating to, or forming or serving as a base or foundation : fundamental
foundational
noun(foun-da-tion-al)
the act of founding
foundational
noun(foun-da-tion-al)
a basis (such as a tenet, principle, or axiom) upon which something stands or is supported
foundational
noun(foun-da-tion-al)
funds given for the permanent support of an institution : endowment