fundamental
Cross references:
1. essential
1. fun.da.men.tal \.f*n-d*-'ment-*l\ \-*l-e-\ aj 1a: serving as an original
or generating source : PRIMARY 1b: serving as a basis supporting existence
or determining essential struc ture or function : BASIC 2a: of or relating
to essential structure, function, or facts : RADIC AL {~ change} : ; specif
: of or dealing with general principles rather than practical application
{~ science} 2b: FUNDAMENTALIST of a musical chord or its position 3a:
having the root in the bass 3b: of, relating to, or produced by the lowest
component of a complex vibr ation 4: of central importance : PRINCIPAL {~
purpose} - fun.da.men.tal.ly av
2. fundamental n 1: something fundamental; esp : one of the minimum
constituents wit hout which a thing or a system would not be what it is 2a:
the prime tone of a harmonic series 2b: the root of a chord 3: the
harmonic component of a wave that has the lowest frequency and commo nly
the greatest amplitude