from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to the foundation or base; elementary: the fundamental laws of the universe.
- adj. Forming or serving as an essential component of a system or structure; central: an example that was fundamental to the argument.
- adj. Of great significance or entailing major change: a book that underwent fundamental revision.
- adj. Physics Of or relating to the component of lowest frequency of a periodic wave or quantity.
- adj. Physics Of or relating to the lowest possible frequency of a vibrating element or system.
- adj. Music Having the root in the bass: a fundamental chord.
- n. Something that is an essential or necessary part of a system or object.
- n. Music The first harmonic in a harmonic series; the lowest harmonic.
- n. Physics The lowest frequency of a periodically varying quantity or of a vibrating system.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, as, the fundamentals of linear algebra.
- adj. Pertaining to the foundation or basis; serving for the foundation. Hence: Essential, as an element, principle, or law; important; original; elementary; as, a fundamental truth; a fundamental axiom.
from the GNU version of the Collaborative International Dictionary of English
- adj. Pertaining to the foundation or basis; serving for the foundation.
- n. A leading or primary principle, rule, law, or article, which serves as the groundwork of a system; essential part, .
from The Century Dictionary and Cyclopedia
- Pertaining to the foundation; serving as or being a component part of a foundation or basis; hence, essential; important; original; elementary: as, a fundamental truth or principle; a. fundamental law.
- See fundamental, n., 2.
- The low tone generated by the tones of a chord. Also called fundamental note.
- n. A leading or primary principle, rule, law, or article, which serves as the groundwork of a system; an essential part: as, the fundamentals of the Christian faith.
- n. In music: The root of a chord.
- n. The generator of a series of harmonics. Also called fundamental bass, note, or tone.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the lowest tone of a harmonic series
- adj. far-reaching and thoroughgoing in effect especially on the nature of something
- n. any factor that could be considered important to the understanding of a particular business
- adj. serving as an essential component
- adj. being or involving basic facts or principles
From Late Latin fundamentalis, from Latin fundamentum ("foundation"), from fundare ("to lay the foundation (of something), to found"), from fundus ("bottom") (Wiktionary)