sesquitertius
From LSJ
οὕτως ἔσονται οἱ ἔσχατοι πρῶτοι καὶ οἱ πρῶτοι ἔσχατοι· πολλοὶ γάρ εἰσι κλητοί, ὀλίγοι δὲ ἐκλεκτοί → so the last shall be first and the first last for many be called but few chosen
Latin > English (Lewis & Short)
sesquĭ-tertĭus: a, um, num. adj., corresp. to the Gr. ἐπίτριτος,
I containing one and a third, or four thirds; bearing the ratio of four to three: intervallum, Cic. Univ. 7, 21; cf. sesquioctavus, and v. sesqui.