Definition of "quadreble"

He starts out by saying that there are three sights, the mene, treble, and quadreble, but actually he discusses only two, the treble and quadreble, both of which are read at the transposition of an octave.

1959, The Musical quarterly - Volume 45, page xlvi

The voices include a counter (always below the tenor), a countertenor (moving above and below the tenor), mene, treble, and quadreble.

1991, Blanche Gangwere, Music history during the Renaissance period, 1425-1520, page 25

The counter involves transposition of the sighted note to the fifth below (for extremely low notes a twelfth), the mene and countertenor do not transpose, the treble transposes to the octave above, and the quadreble to the twelfth above.

2003, Willi Apel, Don Michael Randel, The Harvard Dictionary of Music, page 780

Not so: for if you observe it, you are to double, treble, or quadreble the length or breadth, as you have occasion.

1618, John Norden, The Surveyor's Dialogue

There is going to be a tremendous rush into Mexico when normal conditions are restored, which must be soon, and now is the logical time to buy land there before it doubles, trebles or quadrebles in price, as it is bound to do.

1919 November 26, “A Word About Mexican Lands”, in The Morning Sun, volume 13, number 275

I would estimate that these modest improvements, which cost lest than £20 in total, have quadrebled how good the guitar is.

2008 September 7, Nico Adie, “Anybody played the P90 Squier tele?”, in Electrical Audio‎ (Usenet)