Related to a foundation. base, or basis; serving as a foundation.
essential; extremely important
The lowest frequency of a periodic waveform.
A main or major principle, rule, law, etc. which serves as the foundation or basis of a system; an essential part
The lowest partial of a complex tone.
Of, pertaining to, or supplying a foundation; foundational; fundamental.
The creation of a foundation or base.
The first process in decorating by means of enamelled colour.