Arne Dehli Halvorsen on Nostr: "Each fraction from 1⁄12 to 12⁄12 had a name in Roman times; these corresponded ...

"Each fraction from 1⁄12 to 12⁄12 had a name in Roman times; these corresponded to the names of the related coins:" from https://en.wikipedia.org/wiki/Roman_numerals. Names like septunx for 7/12 and sestertius for 5/2, even sescunx for 1/8 ("one and a half twelfth")