adjective \ˌfən-də-ˈmen-təl\

: forming or relating to the most important part of something

: of or relating to the basic structure or function of something

Full Definition of FUNDAMENTAL

a :  serving as an original or generating source :  primary <a discovery fundamental to modern computers>
b :  serving as a basis supporting existence or determining essential structure or function :  basic
a :  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
:  of, relating to, or produced by the lowest component of a complex vibration
:  of central importance :  principal <fundamental purpose>
:  belonging to one's innate or ingrained characteristics :  deep-rooted <her fundamental good humor>
fun·da·men·tal·ly \-təl-ē\ adverb


  1. The Constitution ensures our fundamental rights.
  2. There's a fundamental difference between these two political parties.
  3. These ideas are of fundamental importance.
  4. The revolution brought about a fundamental change in the country.
  5. We need to make some fundamental changes in the way we do business.
  6. We need to address these problems on a more fundamental level.

First Known Use of FUNDAMENTAL

15th century



: one of the basic and important parts of something : a fundamental part

Full Definition of FUNDAMENTAL

:  something fundamental; especially :  one of the minimum constituents without which a thing or a system would not be what it is
a :  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
:  the harmonic component of a complex wave that has the lowest frequency and commonly the greatest amplitude

First Known Use of FUNDAMENTAL



noun \ˌfən-də-ˈment-əl\   (Medical Dictionary)

Medical Definition of FUNDAMENTAL

: the principal musical tone produced by vibration (as of a string or column of air) on which a series of higher overtones is based


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