Essential Meaning of fundamental
1 : forming or relating to the most important part of something : basic The Constitution ensures our fundamental rights. There's a fundamental difference between these two political parties. a fundamental truth/concept/belief
2 : of or relating to the basic structure or function of something These ideas are of fundamental importance. The revolution brought about a fundamental change in the country. See More ExamplesWe need to make some fundamental changes in the way we do business. We need to address these problems on a more fundamental level.
Full Definition of fundamental
(Entry 1 of 2)
1a : serving as a basis supporting existence or determining essential structure or function : basic Responsibility is fundamental to democracy. The Constitution ensures our fundamental rights.
b : serving as an original or generating source : primary a discovery fundamental to modern computers
2a : of or relating to essential structure, function, or facts : radical fundamental change also : of or dealing with general principles rather than practical application fundamental science
b : adhering to fundamentalism a preacher who is evangelical, Bible-teaching, and fundamental
3 : of central importance : principal fundamental purpose such fundamental events as birth, marriage, and death
4 : belonging to one's innate or ingrained characteristics : deep-rooted her fundamental good humor
5 : of, relating to, or produced by the lowest component of a complex vibration (see vibration sense 1)
Definition of fundamental (Entry 2 of 2)
1 : something fundamental especially : one of the minimum constituents without which a thing or a system would not be what it is
2a : the principal musical tone produced by vibration (as of a string or column of air) on which a series of higher harmonics is based
b : the root of a chord
3 : the harmonic component of a complex wave that has the lowest frequency and commonly the greatest amplitude
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