CISSA, or CISUM (anc. geog.), a town of the Hither Spain, in Laetania, on the east side of the Iberus, (thought to be Gallona.) Where the Carthaginians were first defeated by Scipio. Another Cissa of Thrace, situated on the river Argos Potamus, which Scylax seems to call Cressa, or Grissa; so that the reading is doubtful.