Persedeo, pérsedes, pe. cor. persédi. pe. prod. persessum, persedere. Sen. To abide or sit still enen to the end.In equo dies & noctes persedêre.Liu.They sate on horseback still day and night.
Lewis and Short: Latin dictionary
per-sĕdĕo, sēdi, sessum, 2, v. n., to remain sitting, to sit or stay long anywhere (not in Cic. or Cæs.): at neque quo pacto persederit umor aquai Visumst, Lucr. 1, 307: totā nocte in speculis, Curt. 9, 9, 23: in equo dies noctesque persedendo, Liv. 45, 39: qui multis apud philosophum annis persederint, Sen. Ep. 108, 5: etiam meridie, Suet. Claud. 34.—II.Transf., of frost: pruinae perniciosior natura, quoniam lapsa persidet gelatque, Plin. 17, 24, 37, 222.