A small interval resulting from the inherent failure in JI of cycles of any particular interval to return to the origin or to an octave equivalent of that origin.
Any discrepancy involved in the comparison of intervals or pitches from two different tuning systems.
Used by Wilkinson 1988. Its use is sometimes synonymous with "error" and "deviation", which is usually measured in cents.
Wilkinson, Scott R.
Tuning In: Microtones in Electronic Music
A Basic Guide to Alternate Scales, Temperaments and Microtuning Using Synthesizers
Hal Leonard Books, Milwaukee, 1988, 120 pages.