sesquioctavus

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.