Fundamental

From Wikinfo

Something that is fundamental is basic and important, something that other things are built upon. For example, the Fundamental theorem of algebra is the basis for many mathematical theorems.

See:

• Basic
• Foundation
• Fundamental frequency in music.
• Core Doctrine of Fundamentalism

References

• Adapted from the Wikipedia article, "Fundamental" http://en.wikipedia.org/wiki/Fundamental, used under the GNU Free Documentation License