S / sesquĭ-tertĭus
adjective hapax

sesquĭ-tertĭus

fem. sesquĭ-tertia · neut. sesquĭ-tertium
corresp. to the Gr. ἐπίτριτος
containing one and a third; four thirds; bearing the ratio of four to three
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.