gamut

Etymology

1520s, original sense “lowest note of musical scale”, from Medieval Latin gamma ut, from gamma (“Greek letter, corresponding to the musical note G”) + ut (“first solfège syllable, now replaced by do”). In modern terms, “G do” – the first note of the G scale. Meaning later extended to mean all the notes of a scale, and then more generally any complete range.

noun

1. A (normally) complete range.
   The entire gamut of the view's changes should have been known to her; its winter aspect, spring, summer and autumn; how storms came up from the sea; how the moors shuddered and brightened as the clouds went over; she should have noted the red spot where the villas were building; and the criss-cross of lines where the allotments were cut... 1922, Virginia Woolf, chapter 2, in Jacob’s Room
   1933?, Dorothy Parker, review of Katharine Hepburn in the Broadway play The Lake She delivered a striking performance that ran the gamut of emotions, from A to B.
   THE LONDON BRIGHTON & SOUTH COAST RAILWAY. By C. Hamilton Ellis. Ian Allan. 30s. … In the course of its pages the author runs through the whole gamut of the locomotives that have during the period under review run on the rails of the L.B. & S.C. and its forebears. 1960 December, “New reading on railways”, in Trains Illustrated, page 776
2. (music) All the notes in a musical scale.
3. All the colours that can be presented by a device such as a monitor or printer.