Acronymisma
| Interval information |
thiwotrithu-azo negative 2nd
17577/17576, the acronymisma, is an unnoticeable 31-limit (also 2.3.7.13.31-subgroup) comma measuring 0.0985 cents. It is the amount by which a stack of 27/26 and 31/26 exceeds 26/21. In terms of commas, it is the difference between the tricesimoprimal kleisma, 217/216, and the threedie, 2197/2187.
Temperaments
Tempering out this comma in the 2.3.7.13.31 subgroup results in the rank-4 acronymic temperament, or in the 31-limit, the rank-8 acronymismic temperament, enabling acronymismic chords.
Etymology
The number 17576 is 26 cubed, and as there are 26 letters in the standard Latin alphabet, it is the number of distinct three-letter combinations or acronyms; the comma was named the "acronymisma" for this by Lériendil in 2025.