Tertul'lus. (diminutive from Tertius). "A certain orator," Acts 24:1, who was retained, by the high priest and Sanhedrin, to accuse the apostle, Pau, l at Caesarea, before the Roman procurator, Antonius Felix. He evidently belonged to the class of professional orators. We may infer that Tertullus was of Roman, or at all events, of Italian, origin. (A.D. 55).