/ ˈgæmət; NAmE / noun
[ sing. ] the complete range of a particular kind of thing :
The network will provide the gamut of computer services to your home.
She felt she had run the (whole) gamut of human emotions from joy to despair.
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WORD ORIGIN
late Middle English : from medieval Latin gamma ut , originally the name of the lowest note in the medieval scale (bass G an octave and a half below middle C), then applied to the whole range of notes used in medieval music. The Greek letter Γ (gamma) was used for bass G, with ut indicating that it was the first note in the lowest of the hexachords or six-note scales.