sesquioctavus
From LSJ
Latin > English (Lewis & Short)
sesquĭ-octāvus: a, um, num. adj., corresp. to the Gr. ἐπόγδοος,
I containing nine eighths, or one and an eighth; bearing the ratio of nine to eight: intervallum, Cic. Univ. 7, 21; cf. sesquitertius, and v. sesqui.
Latin > French (Gaffiot 2016)
sēsquĭoctāvus, a, um, qui contient une fois et un huitième [ou 9/8] : Cic. Tim. 21 || sesquioctavus decimus Boet. Mus. 3, 2, égal aux 19/18.