An foundational thing or idea is what gives shape and direction to something else. It's like a strong base that holds everything together.
The word "foundational" is used when people talk about the core of an idea, project, or institution. For example, a university might have a foundational mission statement that explains its goals and values. In business, a company's leadership team often lays out a set of foundational principles that guide their decisions. A teacher might emphasize the importance of certain fundamental concepts in math or science, calling them "foundational" because they're essential to understanding more advanced topics.
Of or relating to a foundation or foundations.
