Fokker's name for the small musical interval with the ratio 2109375:2097152 = 2-21 * 33 * 57 -- which may be written as the 2,3,5-monzo [-21 3, 7 > -- = ~10.06099965 cents.
In Monzo, 5-limit intervals, 100 cents and under, a suggested name for this interval is the "super-septapental kleisma".
The tempering-out (vanishing) of this interval defines the family of temperaments which Gene Ward Smith dubbed "orwell".
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